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Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or
harnesses A harness is a looped restraint or support. Specifically, it may refer to one of the following harness types: * Bondage harness * Child harness * Climbing harness * Dog harness * Pet harness * Five-point harness * Horse harness * Parrot harne ...
. While bouldering can be done without any equipment, most climbers use climbing shoes to help secure footholds,
chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Ch ...
to keep their hands dry and to provide a firmer grip, and
bouldering mat A bouldering mat or crash pad is a foam pad used for protection when bouldering Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses. While boulderi ...
s to prevent injuries from falls. Unlike
free solo climbing Free solo climbing, or free soloing, is a form of technical ice or rock climbing where the climbers (or ''free soloists'') climb alone without ropes, harnesses or other protective equipment, forcing them to rely entirely on their own individu ...
, which is also performed without ropes, bouldering problems (the sequence of moves that a climber performs to complete the climb) are usually less than tall. Traverses, which are a form of boulder problem, require the climber to climb horizontally from one end to another. Artificial climbing walls allow boulderers to climb indoors in areas without natural boulders. In addition, bouldering competitions take place in both indoor and outdoor settings. The sport was originally a method of training for roped climbs and mountaineering, so climbers could practice specific moves at a safe distance from the ground. Additionally, the sport served to build stamina and increase finger strength. Throughout the 20th century, bouldering evolved into a separate discipline. Individual problems are assigned ratings based on difficulty. Although there have been various
rating systems A rating is an evaluation or assessment of something, in terms of quality, quantity, or some combination of both. Rating or ratings may also refer to: Business and economics * Credit rating, estimating the credit worthiness of an individual, c ...
used throughout the history of bouldering, modern problems usually use either the V-scale or the Fontainebleau scale. The growing popularity of bouldering has caused several environmental concerns, including soil
erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is dis ...
and trampled vegetation, as climbers often hike off-trail to reach bouldering sites. This has caused some landowners to restrict access or prohibit bouldering altogether.


Outdoor bouldering

The characteristics of boulder problems depend largely on the type of rock being climbed. For example,
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...
often features long cracks and
slab Slab or SLAB may refer to: Physical materials * Concrete slab, a flat concrete plate used in construction * Stone slab, a flat stone used in construction * Slab (casting), a length of metal * Slab (geology), that portion of a tectonic plate tha ...
s while
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...
rocks are known for their steep overhangs and frequent horizontal breaks.
Limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...
and
volcanic rock Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic ...
are also used for bouldering. There are many prominent bouldering areas throughout the United States, including
Hueco Tanks Hueco Tanks is an area of low mountains and historic site in El Paso County, Texas, in the United States. It is located in a high-altitude desert basin between the Franklin Mountains to the west and the Hueco Mountains to the east. ''Hueco'' is ...
in Texas,
Mount Evans Mount Evans is the highest peak in the Mount Evans Wilderness in the Front Range of the Rocky Mountains of North America. The prominent 14,271-foot (4,350 m) fourteener is located southwest by south ( bearing 214°) of Idaho Springs in Clear C ...
in Colorado, The Appalachian Mountains in The Eastern United States, and
The Buttermilks The Buttermilks, or Buttermilk Country, is a well known bouldering destination near Bishop, California. It comprises the western edge of the Owens Valley, in the eastern foothills of the Sierra Nevada. Buttermilk Country is renowned for its large ...
in
Bishop, California Bishop (formerly Bishop Creek) is a city in California, United States. It is the largest populated place and only incorporated city in Inyo County. Bishop is located near the northern end of the Owens Valley, at an elevation of . The city was ...
. Squamish, British Columbia is one of the most popular bouldering areas in Canada. Europe is also home to a number of bouldering sites, such as Fontainebleau in France,
Albarracín Albarracín () is a Spanish town, in the province of Teruel, part of the autonomous community of Aragon. According to the 2007 census (INE), the municipality had a population of 1075 inhabitants. Albarracín is the capital of the mountainous Sier ...
in Spain, and various mountains throughout Switzerland. Africa's most prominent bouldering areas include the more established
Rocklands, South Africa Rocklands is a popular bouldering destination in South Africa. It is located under 200km from Cape Town, on the edge of the Cederberg Mountains. The area is known for its abundance of bright-orange sandstone boulders. Boulderers have frequented R ...
, the newer
Oukaïmeden Oukaïmeden (Berber language: Ukayemdan) is a ski resort in the Atlas mountains near the Toubkal mountain, about from Marrakesh, Morocco. The skiing area is at an altitude of between and and has six ski lifts. There are some hotels and ski r ...
in Morocco or more recently opened areas like Chimanimani in Zimbabwe.


Indoor bouldering

Artificial climbing walls are used to simulate boulder problems in an indoor environment, usually at
climbing gym A climbing gym is a gym dedicated to indoor climbing. Climbing gyms have climbing walls that can be used for leading, top roping, and bouldering. They sometimes offer training equipment to improve technique, strength, and endurance. Contents of ...
s. These walls are constructed with wooden panels,
polymer A polymer (; Greek '' poly-'', "many" + ''-mer'', "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic a ...
cement panels,
concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wid ...
shells, or precast molds of actual rock walls. Holds, usually made of
plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptab ...
, are then bolted onto the wall to create problems. Some problems use steep overhanging surfaces which force the climber to support much of their weight using their upper body strength. Other problems are set on flat walls; Instead of requiring upper body strength, these problems create difficulty by requiring the climber to execute a series of predetermined movements to complete the route. The
IFSC Climbing World Championships The IFSC Climbing World Championships are the biennial (i.e. held once every two years) world championship event for competition climbing that is organized by the International Federation of Sport Climbing (IFSC). This event determines the m ...
have noticeably included more of such problems in their competitions as of late. Climbing gyms often feature multiple problems within the same section of wall. In the US the most common method route-setters use to designate the intended problem is by placing colored tape next to each hold. For example, red tape would indicate one bouldering problem while green tape would be used to set a different problem in the same area. Across much of the rest of the world problems and grades are usually designated using a set color of plastic hold to indicate problems and their difficulty levels. Using colored holds to set has certain advantages, the most notable of which are that it makes it more obvious where the holds for a problem are, and that there is no chance of tape being accidentally kicked off footholds. Smaller, resource-poor climbing gyms may prefer taped problems because large, expensive holds can be used in multiple routes by marking them with more than one color of tape. The tape indicates the hold(s) that the athlete should grab first. Indoor bouldering requires very little in terms of equipment, at minimum climbing shoes, at maximum, a chalk bag, chalk, a brush, and climbing shoes.


Grading

Bouldering problems are assigned numerical difficulty ratings by route-setters and climbers. The two most widely used rating systems are the V-scale and the Fontainebleau system. The V-scale, which originated in the United States, is an open-ended rating system with higher numbers indicating a higher
degree of difficulty Degree of difficulty (DD, sometimes called tariff or grade) is a concept used in several sports and other competitions to indicate the technical difficulty of a skill, performance, or course, often as a factor in scoring. Sports which incorporate ...
. The V1 rating indicates that a problem can be completed by a novice climber in good physical condition after several attempts. The scale begins at V0, and as of 2013, the highest V rating that has been assigned to a bouldering problem is V17. Some climbing gyms also use a VB grade to indicate beginner problems. The Fontainebleau scale follows a similar system, with each numerical grade divided into three ratings with the letters ''a'', ''b'', and ''c''. For example, Fontainebleau 7A roughly corresponds with V6, while Fontainebleau 7C+ is equivalent to V10. In both systems, grades are further differentiated by appending "+" to indicate a small increase in difficulty. Despite this level of specificity, ratings of individual problems are often controversial, as ability level is not the only factor that affects how difficult a problem may be for a particular climber. Height, arm length,
flexibility Stiffness is the extent to which an object resists deformation in response to an applied force. The complementary concept is flexibility or pliability: the more flexible an object is, the less stiff it is. Calculations The stiffness, k, of a bo ...
, and other body characteristics can also be relevant to perceived difficulty.


Highball bouldering

Highball bouldering is simply climbing high, difficult, long, and tall boulders. Using the same protection as standard bouldering, climbers venture up house-sized rocks that test not only their physical skill and strength but mental focus. Highballing, like most of climbing, is open to interpretation. Most climbers say anything above is a highball and can range in height up to where highball bouldering then turns into
free soloing Free solo climbing, or free soloing, is a form of technical ice or rock climbing where the climbers (or ''free soloists'') climb alone without ropes, harnesses or other protective equipment, forcing them to rely entirely on their own individua ...
. Highball bouldering may have begun in 1961 when
John Gill John Gill may refer to: Sports *John Gill (cricketer) (1854–1888), New Zealand cricketer *John Gill (coach) (1898–1997), American football coach *John Gill (footballer, born 1903), English professional footballer *John Gill (American football) ...
, without top-rope rehearsal, bouldered a steep face on a granite spire called "''The Thimble''".>Ament, Pat (2002). ''Wizards of Rock: A History of Free Climbing in America'', Wilderness Press The difficulty level of this ascent (V4/5 or 5.12a) was extraordinary for that time. Gill's achievement initiated a wave of climbers making ascents of large boulders. Later, with the introduction and evolution of crash pads, climbers were able to push the limits of highball bouldering ever higher. In 2002
Jason Kehl Jason Kehl is a professional American rock climber known for his highball bouldering ascents, inspired artistic endeavors, and for his work shaping holds. In 2006, he was awarded the prestigious Everest Award for climbing, and is the first person ...
completed the first highball at double-digit V-difficulty, called Evilution, a boulder in the Buttermilks of California, earning the grade of V12. This climb marked the beginning of a new generation of highball climbing that pushed not only height, but great difficulty. It is not unusual for climbers to rehearse such risky problems on top-rope, although this practice is not a settled issue. Groundbreaking ascents in this style include; ''Ambrosia'', a boulder in Bishop, California, climbed by
Kevin Jorgeson Kevin Jorgeson (born October 7, 1984) is an American rock climber. He was one of the first two climbers, alongside his climbing partner Tommy Caldwell, to successfully complete a free climb of the Dawn Wall of El Capitan in Yosemite National Par ...
in 2015 sporting the grade of V11. ''Too Big to Flail,'' V10, another line in Bishop, California, climbed by
Alex Honnold Alexander Honnold (born August 17, 1985) is an American rock climber best known for his free solo ascents of big walls. Honnold rose to prominence in June 2017 when he became the first person to free solo El Capitan in Yosemite National Park, a ...
in 2016. ''Livin' Large'', a V15 in
Rocklands, South Africa Rocklands is a popular bouldering destination in South Africa. It is located under 200km from Cape Town, on the edge of the Cederberg Mountains. The area is known for its abundance of bright-orange sandstone boulders. Boulderers have frequented R ...
, found and established by
Nalle Hukkataival Nalle Hukkataival (born 8 September 1986 in Helsinki) is a Finnish professional climber. He specializes in bouldering Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the us ...
in 2009, which has been repeated by only one person,
Jimmy Webb Jimmy Layne Webb (born August 15, 1946) is an American songwriter, composer, and singer. He has written numerous platinum-selling songs, including " Up, Up and Away", " By the Time I Get to Phoenix", " MacArthur Park", " Wichita Lineman", " Wo ...
. ''The Process'' is a V16 in Bishop, California, first climbed by
Daniel Woods Daniel Woods (born August 1, 1989) is an American professional rock climber who specializes in bouldering and is considered one of the most important climbers in the history of bouldering. Woods has climbed over thirty bouldering problems graded ...
in 2015. The line was worked with another climber, Dan Beal, but a hold broke after Woods's top and the climb has yet to see a second ascent as of 28 Sep 2017.


Competitions

Traditionally, competition in bouldering was informal, with climbers working out problems near the limits of their abilities, then challenging their peers to repeat these accomplishments. However, modern climbing gyms allow for a more formal competitive structure. The
International Federation of Sport Climbing The International Federation of Sport Climbing (IFSC) is the international governing body for the sport of competitive climbing, which consists of the disciplines lead climbing, speed climbing, and bouldering. It was founded in Frankfurt on 27 Ja ...
(IFSC) employs an indoor format (although competitions can also take place in an outdoor setting) that breaks the competition into three rounds: qualifications, semi-finals, and finals. The rounds feature different sets of four to six boulder problems, and each competitor has a fixed amount of time to attempt each problem. At the end of each round, competitors are ranked by the number of completed problems with ties settled by the total number of attempts taken to solve the problems. Some competitions only permit climbers a fixed number of attempts at each problem with a timed rest period in between. In an open-format competition, all climbers compete simultaneously, and are given a fixed amount of time to complete as many problems as possible. More points are awarded for more difficult problems, while points are deducted for multiple attempts on the same problem. In 2012, the IFSC submitted a proposal to the
International Olympic Committee The International Olympic Committee (IOC; french: link=no, Comité international olympique, ''CIO'') is a non-governmental sports organisation based in Lausanne, Switzerland. It is constituted in the form of an association under the Swiss ...
(IOC) to include
lead climbing Lead climbing is a climbing style, predominantly used in rock climbing. In a roped party one climber has to take the lead while the other climbers follow. The ''lead climber'' wears a harness attached to a climbing rope, which in turn is connected ...
in the
2020 Summer Olympics The , officially the and also known as , was an international multi-sport event held from 23 July to 8 August 2021 in Tokyo, Japan, with some preliminary events that began on 21 July. Tokyo was selected as the host city during the 1 ...
. The proposal was later revised to an "overall" competition, which would feature bouldering, lead climbing, and
speed climbing Speed climbing is a climbing discipline in which speed is the ultimate goal. Speed climbing is done on rocks, walls and poles and is only recommended for highly skilled and experienced climbers. Competition speed climbing, which takes place on ...
. In May 2013, the IOC announced that climbing would not be added to the 2020 Olympic program. In 2016, the
International Olympic Committee The International Olympic Committee (IOC; french: link=no, Comité international olympique, ''CIO'') is a non-governmental sports organisation based in Lausanne, Switzerland. It is constituted in the form of an association under the Swiss ...
(IOC) officially approved climbing as an Olympic sport "in order to appeal to younger audiences." The Olympics will feature the earlier proposed overall competition. Medalists will be competing in all three categories for a best overall score. The score will be calculated by the multiplication of the positions that the climbers have attained in each discipline of climbing.


History

Rock climbing first appeared as a sport in the late 1800s. Early records describe climbers engaging in what is now referred to as bouldering, not as a separate discipline, but as a playful form of training for larger ascents. It was during this time that the words "bouldering" and "problem" first appeared in British climbing literature.
Oscar Eckenstein Oscar Johannes Ludwig Eckenstein (9 September 1859 – 8 April 1921) was an English rock climber and mountaineer, and a pioneer in the sport of bouldering. Inventor of the modern crampon, he was an innovator in climbing technique and mountaine ...
was an early proponent of the activity in the British Isles. In the early 20th century, the Fontainebleau area of
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
established itself as a prominent climbing area, where some of the first dedicated ''bleausards'' (or "boulderers") emerged. One of those athletes,
Pierre Allain Pierre Allain (7 January 1904 – 19 December 2000) was a French alpinist who began climbing in the 1920s. In the 1930s he was joined by several others at Fontainebleau, where his group of "'Bleausards" developed a love of bouldering that went be ...
, invented the specialized shoe used for rock climbing.


Modern bouldering

In the late 1950s through the 1960s, American mathematician
John Gill John Gill may refer to: Sports *John Gill (cricketer) (1854–1888), New Zealand cricketer *John Gill (coach) (1898–1997), American football coach *John Gill (footballer, born 1903), English professional footballer *John Gill (American football) ...
pushed the sport further and contributed several important innovations, distinguishing bouldering as a separate discipline in the process.Ament, Pat (1998). ''John Gill:Master of Rock. Climbing Classics #2'', Stackpole Books Gill previously pursued
gymnastics Gymnastics is a type of sport that includes physical exercises requiring balance, strength, flexibility, agility, coordination, dedication and endurance. The movements involved in gymnastics contribute to the development of the arms, legs, shou ...
, a sport which had an established scale of difficulty for movements and body positions, and shifted the focus of bouldering from reaching the summit to navigating a set of holds. Gill developed a rating system that was closed-ended: B1 problems were as difficult as the most challenging roped routes of the time, B2 problems were more difficult, and B3 problems had been completed once. Gill introduced
chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk ...
as a method of keeping the climber's hands dry, promoted a dynamic climbing style, and emphasized the importance of
strength training Strength training or resistance training involves the performance of physical exercises that are designed to improve strength and endurance. It is often associated with the lifting of weights. It can also incorporate a variety of training te ...
to complement skill. As Gill improved in ability and influence, his ideas became the norm. In the 1980s, two important training tools emerged. One important training tool was
bouldering mat A bouldering mat or crash pad is a foam pad used for protection when bouldering Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses. While boulderi ...
s, also referred to as "crash pads", which protected against injuries from falling and enabled boulderers to climb in areas that would have been too dangerous otherwise. The second important tool was indoor climbing walls, which helped spread the sport to areas without outdoor climbing and allowed serious climbers to train year-round. As the sport grew in popularity, new bouldering areas were developed throughout Europe and the United States, and more athletes began participating in bouldering competitions. The visibility of the sport greatly increased in the early 2000s, as
YouTube YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by ...
videos and climbing
blog A blog (a truncation of "weblog") is a discussion or informational website published on the World Wide Web consisting of discrete, often informal diary-style text entries (posts). Posts are typically displayed in reverse chronological order ...
s helped boulderers around the world to quickly learn techniques, find hard problems, and announce newly completed projects.


Notable ascents

Notable boulder climbs are chronicled by the climbing media to track progress in boulder climbing standards and levels of technical difficulty; in contrast, the hardest
traditional climbing Traditional climbing (or Trad climbing) is a style of rock climbing in which the climber places all the necessary protection gear required to arrest any falls as they are climbing, and then removes it when the pitch is complete (often done ...
routes tend to be of lower technical difficulty due to the additional burden of having to place protection during the course of the climb, and due to the lack of any possibility of using natural protection on the most extreme climbs. As of November 2022, the world's hardest bouldering routes are ''Burden of Dreams'' by
Nalle Hukkataival Nalle Hukkataival (born 8 September 1986 in Helsinki) is a Finnish professional climber. He specializes in bouldering Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the us ...
, ''Return of the Sleepwalker'' by
Daniel Woods Daniel Woods (born August 1, 1989) is an American professional rock climber who specializes in bouldering and is considered one of the most important climbers in the history of bouldering. Woods has climbed over thirty bouldering problems graded ...
, both at proposed grades of . There are a number of routes with a confirmed climbing grade of , the first of which was ''Gioia'' by Christian Core in 2008 (and confirmed by
Adam Ondra Adam Ondra (born February 5, 1993) is a Czech professional rock climber, specializing in lead climbing and bouldering. In 2013, ''Rock & Ice'' described Ondra as a prodigy and the leading climber of his generation. Ondra is the only male athlete t ...
in 2011). As of December 2021, female climbers Josune Bereziartu,
Ashima Shiraishi Ashima Shiraishi (白石阿島, ''Shiraishi Ashima'', born April 3, 2001) is an American rock climber. Shiraishi started climbing at the age of six at Rat Rock in Central Park, joining her father. Only a few years later, she quickly established ...
, and
Kaddi Lehmann Kaddi (کڈی) (also known as Kaday or کډے in Pashto language, Pashto) is a village in the Swabi District of Khyber Pakhtunkhwa, Khyber-Pakhtunkhwa. The inhabitants belong to Aba Khel (tribe), Aba Khel subtribe of Mandanr Yusafzai Pakhtuns who ...
have repeated boulder problems at the boulder grade.


Equipment

Unlike other climbing sports, bouldering can be performed safely and effectively with very little equipment, an aspect which makes the discipline highly appealing, but opinions differ. While bouldering pioneer
John Sherman John Sherman (May 10, 1823October 22, 1900) was an American politician from Ohio throughout the Civil War and into the late nineteenth century. A member of the Republican Party, he served in both houses of the U.S. Congress. He also served as ...
asserted that "The only gear really needed to go bouldering is boulders," others suggest the use of climbing shoes and a chalkbag – a small pouch where ground-up chalk is kept – as the bare minimum, and more experienced boulderers typically bring multiple pairs of climbing shoes, chalk, brushes, crash pads, and a skincare kit. Climbing shoes have the most direct impact on performance. Besides protecting the climber's feet from rough surfaces, climbing shoes are designed to help the climber secure footholds. Climbing shoes typically fit much tighter than other athletic footwear and often curl the toes downwards to enable precise footwork. They are manufactured in a variety of different styles to perform in different situations. For example, High-top shoes provide better protection for the ankle, while low-top shoes provide greater flexibility and freedom of movement. Stiffer shoes excel at securing small edges, whereas softer shoes provide greater sensitivity. The front of the shoe, called the "toe box", can be asymmetric, which performs well on overhanging rocks, or symmetric, which is better suited for vertical problems and slabs. To absorb sweat, most boulderers use gymnastics chalk on their hands, stored in a chalkbag, which can be tied around the waist (also called sport climbing chalkbags), allowing the climber to reapply chalk during the climb. There are also versions of floor chalkbags (also called bouldering chalkbags), which are usually bigger than sport climbing chalkbags and are meant to be kept on the floor while climbing; this is because boulders do not usually have so many movements as to require chalking up more than once. Different sizes of
brush A brush is a common tool with bristles, wire or other filaments. It generally consists of a handle or block to which filaments are affixed in either a parallel or perpendicular orientation, depending on the way the brush is to be gripped durin ...
es are used to remove excess chalk and debris from boulders in between climbs; they are often attached to the end of a long straight object in order to reach higher holds. Crash pads, also referred to as
bouldering mat A bouldering mat or crash pad is a foam pad used for protection when bouldering Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses. While boulderi ...
s, are foam cushions placed on the ground to protect climbers from injury after falling. Boulder problems are generally shorter than from ground to top. This makes the sport significantly safer than
free solo climbing Free solo climbing, or free soloing, is a form of technical ice or rock climbing where the climbers (or ''free soloists'') climb alone without ropes, harnesses or other protective equipment, forcing them to rely entirely on their own individu ...
, which is also performed without ropes, but with no upper limit on the height of the climb. However, minor injuries are common in bouldering, particularly
sprained ankle A sprained ankle, also known as a twisted ankle or rolled ankle, is an injury where sprain occurs on one or more ligaments of the ankle. It is the most common injury to occur in ball sports, such as basketball, volleyball, football, and racquet s ...
s and
wrists In human anatomy, the wrist is variously defined as (1) the carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; "The wrist contains eight bones, roughly aligned in two rows, known as the carpal ...
. Two factors contribute to the frequency of injuries in bouldering: first, boulder problems typically feature more difficult moves than other climbing disciplines, making falls more common. Second, without ropes to arrest the climber's descent, every fall will cause the climber to hit the ground. To prevent injuries, boulderers position crash pads near the boulder to provide a softer landing, as well as one or more spotters (people watching out for the climber to fall in convenient position) to help redirect the climber towards the pads. Upon landing, boulderers employ falling techniques similar to those used in
gymnastics Gymnastics is a type of sport that includes physical exercises requiring balance, strength, flexibility, agility, coordination, dedication and endurance. The movements involved in gymnastics contribute to the development of the arms, legs, shou ...
: spreading the impact across the entire body to avoid
bone fracture A bone fracture (abbreviated FRX or Fx, Fx, or #) is a medical condition in which there is a partial or complete break in the continuity of any bone in the body. In more severe cases, the bone may be broken into several fragments, known as a '' ...
s, and positioning limbs to allow joints to move freely throughout the impact.


Technique

Although every type of rock climbing requires a high level of strength and technique, bouldering is the most dynamic form of the sport, requiring the highest level of power and placing considerable strain on the body. Training routines that strengthen fingers and forearms are useful in preventing injuries such as
tendonitis Tendinopathy, a type of tendon disorder that results in pain, swelling, and impaired function. The pain is typically worse with movement. It most commonly occurs around the shoulder ( rotator cuff tendinitis, biceps tendinitis), elbow ( tennis e ...
and ruptured ligaments. However, as with other forms of climbing, bouldering technique begins with proper footwork.
Leg muscles The human leg, in the general word sense, is the entire lower limb of the human body, including the foot, thigh or sometimes even the hip or gluteal region. However, the definition in human anatomy refers only to the section of the lower limb e ...
are significantly stronger than arm muscles; thus, proficient boulderers use their arms to maintain balance and body positioning as much as possible, relying on their legs to push them up the rock. Boulderers also keep their arms straight with their shoulders engaged whenever feasible, allowing their bones to support their body weight rather than their muscles. Bouldering movements are described as either "static" or "dynamic". Static movements are those that are performed slowly, with the climber's position controlled by maintaining contact on the boulder with the other three limbs. Dynamic movements use the climber's
momentum In Newtonian mechanics, momentum (more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. If is an object's mass an ...
to reach holds that would be difficult or impossible to secure statically, with an increased risk of falling if the movement is not performed accurately.


Environmental impact

Bouldering can damage vegetation that grows on rocks, such as
moss Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hor ...
and
lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Soil erosion Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and ...
can occur when boulderers trample vegetation while hiking off of established trails, or when they unearth small rocks near the boulder in an effort to make the landing zone safer in case of a fall. The repeated use of white climbing chalk can damage the rock surface of boulders and cliffs, particularly sandstone and other porous rock types, and the scrubbing of rocks to remove chalk can also degrade the rock surface. In order to prevent chalk from damaging the surface of the rock, it is important to remove it gently with a brush after a rock climbing session. Other environmental concerns include littering, improperly disposed
feces Feces ( or faeces), known colloquially and in slang as poo and poop, are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relati ...
, and
graffiti Graffiti (plural; singular ''graffiti'' or ''graffito'', the latter rarely used except in archeology) is art that is written, painted or drawn on a wall or other surface, usually without permission and within public view. Graffiti ranges from s ...
. These issues have caused some land managers to prohibit bouldering, as was the case in Tea Garden, a popular bouldering area in
Rocklands, South Africa Rocklands is a popular bouldering destination in South Africa. It is located under 200km from Cape Town, on the edge of the Cederberg Mountains. The area is known for its abundance of bright-orange sandstone boulders. Boulderers have frequented R ...
.


References

{{Extreme sports Types of climbing Articles containing video clips