The Bōsō Hill Range ( 房総丘陵 , Bōsō-kyūryō ) is a mountain range on the Bōsō Peninsula of Chiba Prefecture , Japan . The highest point in the Bōsō Mountain Range is at Mount Atago , with an altitude of 408.2 m (1,339 ft). 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 .
13-480: 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 . The hill range also has noted forests of oaks , chestnut , Japanese cedar ( Cryptomeria ), and various species of evergreen . The hill area around Tateyama is noted for its forests of castanopsis trees, a genus of evergreens belonging to the beech family . The Bōsō Hill Range
26-631: A specific gravity of 0.88, among the highest of North American hardwoods. Seven Sisters Oak Seven Sisters Oak , located in Mandeville , Louisiana , is a notably large southern live oak in Louisiana. The tree was originally registered at the Live Oak Society as "Doby's Seven Sisters" (No. 200) because the Doby family owned the property where the tree was located and Mrs. Doby
39-815: Is used mainly in North America , where evergreen oaks are widespread in warmer areas along the Atlantic coast from southeast Virginia to Florida , west along the Gulf Coast to Louisiana and Mexico , and across the southwest to California . Evergreen oak species are also common in parts of southern Europe and south Asia , and are included in this list for the sake of completeness. These species, although not having "live" in their common names in their countries of origin, are colloquially called live oaks when cultivated in North America. According to
52-632: The 252 Air Group of the Imperial Japanese Navy (IJN) built the Mobara Air Field in 1941 in Mobara. After the war land reform 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. The hill range was known for charcoal production in the past. The hill range is still home to many dairy farms. Numerous golf courses were developed in
65-497: The Live Oak Society the oldest southern live oak is believed to be the Seven Sisters Oak located in Mandeville, Louisiana with an estimated age of 500–1,000 years. The southern live oak is the official state tree of Georgia . The Seal of Texas includes a live oak branch. A small grove of live oaks on a prairie is known as a mott . Live oak was widely used in early American butt shipbuilding . Because of
78-541: The United States was similarly sought and exported until metal-hulled commercial vessels became the norm in the early part of the 20th century. Live oak lumber is rarely used for furniture, because it warps and twists while drying. The wood of live oaks continues to be used occasionally in shipbuilding—and in tool handles for its strength, energy absorption, and density, although modern composites are often substituted with good effect. Dry Southern live oak lumber has
91-425: The hill region, and recreational facilities continue to be developed in the area. The hill range is popular as a hiking destination. 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 other oaks. When
104-542: 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 as part of medieval conflicts. The provinces endured until Chiba Prefecture was established at the end of the 19th century in the Meiji period . The Bōsō Hill Range provided a natural fortification against air attack of Tokyo during World War II , when
117-486: The term live oak is used in a specific rather than general sense, it most commonly refers to the group of species under Quercus sect. Virentes , which includes the southern live oak ( Quercus virginiana ), the first species so named, and an icon of the Old South . The name live oak comes from the fact that evergreen oaks remain green and "live" throughout winter, when other oaks are dormant and leafless. The name
130-604: The tree did not lend itself to being milled to planking of any length. "The world's oldest floating ship, the USS Constitution, launched in 1797, got its nickname "Old Ironsides" during the War of 1812 after its hull, made in part of live oak, proved equal to the fearsome cannons of the British". Loggers had cut down most of the live oak trees in southern Europe by the latter half of the 19th century. Live oak timber from
143-408: The trees' short height and low-hanging branches, lumber from live oaks was used in curved parts of the frame, such as knee braces (single-piece, L-shaped braces that spring inward from the side and support the deck), in which the grain runs perpendicular to structural stress, making for exceptional strength. Live oaks were not generally used for planking because the curved and often convoluted shape of
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#1732790896566156-526: Was one of seven sisters. The tree was renamed "Seven Sisters Oak" and reregistered at the Live Oak Society as member number 697. Seven Sisters Oak is the current president of the Live Oak Society , a status awarded to it by being the largest live oak registered by the society. Although there was some controversy as to whether the oak was one tree or several trees that had grown together, an inspection by professional foresters in 1976 determined that
169-577: Was settled from the earliest periods of Japanese history. The Yōrō Ravine in present-day Ōtaki, Chiba is home to Jōmon period remains. Kofun tumuli were built across the entire hill range in the Kofun period, but Futtsu and Ichihara have especially rich examples of tumuli. Under the Taika Reform of 645, during the Asuka period , the hill range became part of three provinces, Shimōsa Province to
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