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 aris ...

on the Bōsō Peninsula of

Chiba Prefecture is a Prefectures of Japan, 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 ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. The highest point in the Bōsō Mountain Range is at Mount Atago, with an altitude of . The hill range runs from roughly in a line from Mobara or Ōamishirasato to Kisarazu, but is not formally defined. It is an important part of the Minami Bōsō Quasi-National Park.

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 generally not more closely related to each other than they are to o ...

. The hill range also has noted forests of

oak An oak is a hardwood tree or shrub in the genus ''Quercus'' of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisp ...

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

, Japanese cedar (

Cryptomeria ''Cryptomeria'' (literally "hidden parts") is a monotypic genus of conifer in the cypress family Cupressaceae. It includes only one species, ''Cryptomeria japonica'' ( syn. ''Cupressus japonica'' L.f.). It is considered to be endemic to Japan, ...

), and various species of

evergreen In botany, an evergreen is a plant which has Leaf, foliage that remains green and functional throughout the year. This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many diffe ...

. The hill area around Tateyama 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. The Engli ...

trees, a genus of

s belonging to the beech family.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 home to

Jōmon period In Japanese history, the is the time between , during which Japan was inhabited by the Jōmon people, a diverse hunter-gatherer and early agriculturalist population united by a common culture, which reached a considerable degree of sedentism an ...

remains.

Kofun are megalithic tombs or tumulus, tumuli in Northeast Asia. ''Kofun'' were mainly constructed in the Japanese archipelago between the middle of the 3rd century to the early 7th century AD.岡田裕之「前方後円墳」『日本古代史大辞 ...

tumuli were built across the entire hill range in the

period, but

Futtsu file:富津市役所.jpg, 260px, Futtsu City Hall is a Cities of Japan, 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 are ...

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 Jap ...

of 645, during the

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

, the hill range became part of three provinces,

Shimōsa Province was a province of Japan in the area of modern Chiba Prefecture and Ibaraki Prefecture as well as the bordering parts of Saitama Prefecture and Tokyo (the parts that used to be located east of the lower reaches of the old Tone River prior to the ...

to the north, Kazusa 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 the period in History of Japan, Japanese history in which civil wars and social upheavals took place almost continuously in the 15th and 16th centuries. The Kyōtoku incident (1454), Ōnin War (1467), or (1493) are generally chosen as th ...

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 was 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 colonizatio ...

. 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 (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, 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, Potsdam Declaration, when it was dissolved followin ...

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

land reform Land reform (also known as agrarian reform) involves the changing of laws, regulations, or customs regarding land ownership, land use, and land transfers. The reforms may be initiated by governments, by interested groups, or by revolution. Lan ...

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, ca ...

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

dairy A dairy is a place where milk is stored and where butter, cheese, and other dairy products are made, or a place where those products are sold. It may be a room, a building, or a larger establishment. In the United States, the word may also des ...

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 teeing ground, tee box, a #Fairway and rough, fairway, the #Fairway and rough, rough and other hazard (golf), hazards, and ...

s were developed in the hill region, and recreational facilities continue to be developed in the area. The hill range is popular as a

hiking A hike is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century. Long hikes as part of a religious pilgrimage have existed for a much longer time. "Hi ...

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, 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