The is a

mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arise ...

on the

Bōsō Peninsula The is a peninsula that encompasses the entirety of Chiba Prefecture on Honshu, the largest island of Japan. It is part of the Greater Tokyo Area. It forms the eastern edge of Tokyo Bay, separating it from the Pacific Ocean. The peninsula covers ...

Chiba Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Chiba Prefecture has a population of 6,278,060 (1 June 2019) and has a geographic area of . Chiba Prefecture borders Ibaraki Prefecture to the north, Saitama Prefecture to the ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. The highest point in the Bōsō Mountain Range is at

Mount Atago ''Mount Atago is a very common name for peaks all over Japan.'' is a 924m mountain in the northwestern part of Ukyo-ku, in the city of Kyoto, Kyoto Prefecture, Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an islan ...

, with an altitude of . The hill range runs from roughly in a line from

Mobara is a city located in Chiba Prefecture. , the city had an estimated population of 88,330 in 40,869 households and a population density of 880 persons per km². The total area of the city is Geography Mobara is located in an inland area of north-c ...

Ōamishirasato file:Oami sta.jpg, 260px, Area around Ōami Station is a Cities of Japan, city located in Chiba Prefecture, Japan. , the city had an estimated population of 49,019 in 21,860 households and a population density of 840 persons per km². The total a ...

Kisarazu is a Cities of Japan, city located in Chiba Prefecture, Japan. , the city had an estimated population of 136,023 in 63,431 households and a population density of 980 persons per km2. The total area of the city is . Geography Kisarazu is locat ...

, but is not formally defined. It is an important part of the

Minami Bōsō Quasi-National Park is a quasi-national park in the Kantō region of Honshū in Japan. It is rated a protected landscape (category V) according to the IUCN. The park includes numerous widely separated portions of the coastal areas of southern Bōsō Peninsula, r ...

Geography

The Bōsō Hill Range is still extensively wooded. The area from the Yōrō Ravine to Mount Seichō is noted for its forests of

live oak Live oak or evergreen oak is any of a number of oaks in several different sections of the genus ''Quercus'' that share the characteristic of evergreen foliage. These oaks are not more closely related to each other than they are to other oaks. ...

. The hill range also has noted forests of

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

chestnut The chestnuts are the deciduous trees and shrubs in the genus ''Castanea'', in the beech family Fagaceae. They are native to temperate regions of the Northern Hemisphere. The name also refers to the edible nuts they produce. The unrelat ...

, Japanese cedar (

Cryptomeria ''Cryptomeria'' (literally "hidden parts") is a monotypic genus of conifer in the cypress family Cupressaceae, formerly belonging to the family Taxodiaceae. It includes only one species, ''Cryptomeria japonica'' ( syn. ''Cupressus japonica'' ...

), and various species of

evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...

. The hill area around

Tateyama Tateyama may refer to: People with the surname * Midori Tateyama, Japanese writer * Shohei Tateyama (born 1981), Japanese baseball player * Yoshinori Tateyama (born 1975), Japanese baseball player * Homarefuji Yoshiyuki (born 1985), Japanese su ...

is noted for its forests of

castanopsis ''Castanopsis'', commonly called chinquapin or chinkapin, is a genus of evergreen trees belonging to the beech family, Fagaceae. The genus contains about 140 species, which are today restricted to tropical and subtropical eastern Asia. A total o ...

trees, a genus of

s belonging to the

beech family The Fagaceae are a family of flowering plants that includes beeches, chestnuts and oaks, and comprises eight genera with about 927 species. Fagaceae in temperate regions are mostly deciduous, whereas in the tropics, many species occur as evergr ...

.Nihon Daihyakka Zensho (Nipponika) (日本大百科全書(ニッポニカ) “Large Encyclopedia of Japan (Nipponika)”). Tokyo: Netto Adobansusha. 2011. . Retrieved 2011-11-22.

History

Premodern history

The Bōsō Hill Range was settled from the earliest periods of Japanese history. The Yōrō Ravine in present-day

Ōtaki, Chiba is a town located in Chiba Prefecture, Japan. The town is known for its association with Edo period general Honda Tadakatsu, and its prominent castle. , the town had an estimated population of 8,982 in 3820 households and a population density of ...

is home to

Jōmon period The is the time in Japanese history, traditionally dated between 6,000–300 BCE, during which Japan was inhabited by a diverse hunter-gatherer and early agriculturalist population united through a common Jōmon culture, which reached a c ...

remains. Kofun tumuli were built across the entire hill range in the Kofun period, but

Futtsu 260px, Futtsu City Hall is a city located in Chiba Prefecture, Japan. , the city had an estimated population of 42,476 in 18,115 households and a population density of 210 persons per km². The total area of the city is . Geography Futtsu is l ...

and Ichihara have especially rich examples of tumuli. Under the

Taika Reform The were a set of doctrines established by Emperor Kōtoku (孝徳天皇 ''Kōtoku tennō'') in the year 645. They were written shortly after the death of Prince Shōtoku and the defeat of the Soga clan (蘇我氏 ''Soga no uji''), uniting Japan ...

of 645, during the

Asuka period The was a period in the history of Japan lasting from 538 to 710 (or 592 to 645), although its beginning could be said to overlap with the preceding Kofun period. The Yamato polity evolved greatly during the Asuka period, which is named after t ...

, the hill range became part of three provinces,

Shimōsa Province was a province of Japan in the area modern Chiba Prefecture, and Ibaraki Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Shimōsa''" in . It lies to the north of the Bōsō Peninsula (房総半島), whose name takes its first ''kanji'' from ...

to the north,

Kazusa Province was a province of Japan in the area of modern Chiba Prefecture. The province was located in the middle of the Bōsō Peninsula, whose name takes its first ''kanji'' from the name of Awa Province and its second from Kazusa and Shimōsa province ...

in the middle part of the range, and Awa Province to the south. The hill range is noted for its richness of castles built during the

Sengoku period The was a period in History of Japan, Japanese history of near-constant civil war and social upheaval from 1467 to 1615. The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan under the ...

as part of medieval conflicts.

Modern history

The provinces endured until Chiba Prefecture was established at the end of the 19th century in the

Meiji period The is an era of Japanese history that extended from October 23, 1868 to July 30, 1912. The Meiji era was the first half of the Empire of Japan, when the Japanese people moved from being an isolated feudal society at risk of colonization ...

. The Bōsō Hill Range provided a natural fortification against air attack of Tokyo during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

, when the 252 Air Group of the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender ...

(IJN) built the Mobara Air Field in 1941 in Mobara. After the war

land reform Land reform is a form of agrarian reform involving the changing of laws, regulations, or customs regarding land ownership. Land reform may consist of a government-initiated or government-backed property redistribution, generally of agricultural ...

was carried out in the region. The eastern part of the hill range saw major economic development as part of the greater Metropolitan Tokyo region.

Economy

The hill range was known for

charcoal Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, cal ...

production in the past. The hill range is still home to many

dairy A dairy is a business enterprise established for the harvesting or processing (or both) of animal milk – mostly from cows or buffaloes, but also from goats, sheep, horses, or camels – for human consumption. A dairy is typically located on ...

farms. Numerous

golf course A golf course is the grounds on which the sport of golf is played. It consists of a series of holes, each consisting of a tee box, a fairway, the rough and other hazards, and a green with a cylindrical hole in the ground, known as a "cup". Th ...

s were developed in the hill region, and

recreational Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasur ...

facilities continue to be developed in the area. The hill range is popular as a

hiking Hiking is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century.AMATO, JOSEPH A. "Mind over Foot: Romantic Walking and Rambling." In ''On Foot: A Histor ...

destination.

Important mountains

File:Boso-hill.JPG, Bōsō Hill Range viewed from remains of Mariyatsu Castle, Kisarazu, Chiba File:Mt.Iyogatake 04.jpg, Summit of

Mount Iyogatake is a mountain on the border of the city of Minamibōsō, Chiba Prefecture, Japan with an altitude of . Mount Iyogatake is at the west of the Mineoka Mountain District of the Bōsō Hill Range, in close proximity to Mount Tomi. The mountain takes ...

, Minamibōsō, Chiba File:Karasubayama.jpg, Mount Karasuba, Minamibōsō, Chiba Image:Kobundo-01.jpg, Yōrō Ravine in Ōtaki, Chiba

References

{{DEFAULTSORT:Boso Hill Range Mountain ranges of Chiba Prefecture