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Ptarmigan Tunnel
The Ptarmigan Tunnel was built in 1930 through the Ptarmigan Wall at an elevation of in Glacier National Park, near Many Glacier, in Montana, US. The manmade tunnel allows hikers to avoid a strenuous climb over very steep terrain between Many Glacier and the Belly River valley. Two opposing steel jackhammers drilling from either side of the tunnel and a series of ten-hole rounds of dynamite gradually broke through the mountain in less than three months. A wide area, originally for guide and tourist horses, extends from each portal with a masonry retaining wall. Natural rock lines the interior walls. Heavy iron doors were hung across the tunnel adits during the summer of 1975. They remain open from mid-July until October 1, weather permitting. Designed by Ole Westman, this trail tunnel embodies exceptional qualities of landscape architecture and engineering in a pedestrian-scaled tunnel, cut through a sheer mountain wall. References See also * Ptarmigan Lake *Burro Schmidt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier National Park (U , in Patagonia, Argentina
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Glacier National Park may refer to: *Glacier National Park (Canada), in British Columbia, Canada *Glacier National Park (U.S.), in Montana, USA See also *Glacier Bay National Park, in Alaska, USA *Los Glaciares National Park Los Glaciares National Park ( es, Parque Nacional Los Glaciares) is a federal protected area in Santa Cruz Province, Argentina. The park covers an area of , making it the largest national park in the country. Established on 11 May 1937, it host ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burro Schmidt Tunnel
The historical Burro Schmidt Tunnel is located in the El Paso Mountains of the northern Mojave Desert, in eastern Kern County, southern California. It is a 0.5-mile (0.80 km) mining tunnel dug with hand tools and dynamite over a 38-year period by William "Burro" H. Schmidt (1871–1954). in the El Paso Mountains of eastern California. The tunnel is below the summit of a mountain. Its southern adit (portal) overlooks the Fremont Valley, Koehn Dry Lake, and the ghost towns of Garlock and Saltdale. History While mining gold in the El Paso Mountains, “Burro” Schmidt was faced with a dangerous ridge between his mining claims and the smelter to the south in Mojave. Schmidt said that he would "never haul his ore to the Mojave smelter down that back trail" using his two burros. Thus, he began his tunnel in 1900. The tunnel was about tall and wide. It was cut through solid granite bedrock and required little shoring. However, Schmidt was trapped many times by falli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedestrian Tunnels In The United States
A pedestrian is a person traveling on foot, whether walking or running. In modern times, the term usually refers to someone walking on a road or pavement, but this was not the case historically. The meaning of pedestrian is displayed with the morphemes ''ped-'' ('foot') and ''-ian'' ('characteristic of'). This word is derived from the Latin term ''pedester'' ('going on foot') and was first used (in English language) during the 18th century. It was originally used, and can still be used today, as an adjective meaning plain or dull. However, in this article it takes on its noun form and refers to someone who walks. The word pedestrian may have been used in middle French in the Recueil des Croniques et Anchiennes Istories de la Grant Bretaigne, à présent nommé Engleterre. In California the definition of a pedestrian has been broadened to include anyone on any human powered vehicle that is not a bicycle, as well as people operating self-propelled wheelchairs by reason of ph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 Establishments In Montana
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 '' Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places In Glacier County, Montana
This is a list of the National Register of Historic Places listings in Glacier County, Montana. It is intended to be a complete list of the properties and districts on the National Register of Historic Places in Glacier County, Montana, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map. There are 39 properties and districts listed on the National Register in the county, including 3 National Historic Landmarks. Listings county-wide See also * List of National Historic Landmarks in Montana * National Register of Historic Places listings in Montana * National Register of Historic Places listings in Glacier National Park References {{Glacier County, Montana Glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transportation In Glacier County, Montana
Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipeline, and space. The field can be divided into infrastructure, vehicles, and operations. Transport enables human trade, which is essential for the development of civilizations. Transport infrastructure consists of both fixed installations, including roads, railways, airways, waterways, canals, and pipelines, and terminals such as airports, railway stations, bus stations, warehouses, trucking terminals, refueling depots (including fueling docks and fuel stations), and seaports. Terminals may be used both for interchange of passengers and cargo and for maintenance. Means of transport are any of the different kinds of transport facilities used to carry people or cargo. They may include vehicles, riding animals, and pack animals. Vehicles may in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnels On The National Register Of Historic Places
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. Tunne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transportation Buildings And Structures On The National Register Of Historic Places In Montana
Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land ( rail and road), water, cable, pipeline, and space. The field can be divided into infrastructure, vehicles, and operations. Transport enables human trade, which is essential for the development of civilizations. Transport infrastructure consists of both fixed installations, including roads, railways, airways, waterways, canals, and pipelines, and terminals such as airports, railway stations, bus stations, warehouses, trucking terminals, refueling depots (including fueling docks and fuel stations), and seaports. Terminals may be used both for interchange of passengers and cargo and for maintenance. Means of transport are any of the different kinds of transport facilities used to carry people or cargo. They may include vehicles, riding animals, and pack animals. Vehicles may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptarmigan Lake (Glacier County, Montana)
Ptarmigan Lake is located in Glacier National Park, in the U. S. state of Montana. Ptarmigan Lake is situated below the Ptarmigan Wall. The lake is a hike from the Swiftcurrent Auto Camp Historic District by way of the Ptarmigan Trail. After another hike from Ptarmigan Lake, the historic Ptarmigan Tunnel can be seen. See also *List of lakes in Glacier County, Montana There are at least 118 named lakes and reservoirs in Glacier County, Montana. Lakes * Alkali Lake, , el. * Allison Lake, , el. * Atsina Lake, , el. * Aubery Lake, , el. * Bench Lake, , el. * Big Spring Lake, , el. * Boundary Lake, ... References Lakes of Glacier National Park (U.S.) Lakes of Glacier County, Montana {{GlacierCountyMT-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier County, Montana
Glacier County is located in the U.S. state of Montana. As of the 2020 census, the population was 13,778. The county is located in northwestern Montana between the Great Plains and the Rocky Mountains, known to the Blackfeet as the "Backbone of the World". The county is geographically and culturally diverse and includes the Blackfeet Indian Reservation, Glacier National Park, and Lewis and Clark National Forest. The county is bordered by 75 miles of international boundary with two ports of entry ( Piegan and Del Bonita) open year-round and one seasonal (Chief Mountain) international border crossing into Alberta, Canada. Settlements Several small unincorporated communities, one incorporated town, and one incorporated city are located within the county. Cut Bank, the county seat with a population of around 3000, is located in eastern Glacier County, on the edge of the Great Plains. Cut Bank arose from the railroad and agriculture needs of the surrounding area, and was fostered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adit
An adit (from Latin ''aditus'', entrance) is an entrance to an underground mine which is horizontal or nearly horizontal, by which the mine can be entered, drained of water, ventilated, and minerals extracted at the lowest convenient level. Adits are also used to explore for mineral veins. Construction Adits are driven into the side of a hill or mountain, and are often used when an ore body is located inside the mountain but above the adjacent valley floor or coastal plain. In cases where the mineral vein outcrops at the surface, the adit may follow the lode or vein until it is worked out, in which case the adit is rarely straight. The use of adits for the extraction of ore is generally called drift mining. Adits can only be driven into a mine where the local topography permits. There will be no opportunity to drive an adit to a mine situated on a large flat plain, for instance. Also if the ground is weak, the cost of shoring up a long adit may outweigh its possible advantage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptarmigan Tunnel Inside
''Lagopus'' is a small genus of birds in the grouse subfamily commonly known as ptarmigans (). The genus contains three living species with numerous described subspecies, all living in tundra or cold upland areas. Taxonomy and etymology The genus ''Lagopus'' was introduced by the French zoologist Mathurin Jacques Brisson in 1760 with the willow ptarmigan (''Lagopus lagopus'') as the type species. The genus name ''Lagopus'' is derived from Ancient Greek (), meaning "hare, rabbit", + (), "foot", in reference to the feathered feet and toes typical of this cold-adapted group (such as the snowshoe hare). The specific epithets ''muta'' and ''leucura'' were for a long time misspelt ''mutus'' and ''leucurus'', in the erroneous belief that the ending of ''Lagopus'' denotes masculine gender. However, as the Ancient Greek term is of feminine gender, and the specific epithet has to agree with that, the feminine ''muta'' and ''leucura'' are correct. The English name ''ptarmigan'' come ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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