Big Hole Pass
Big Hole Pass (el. 7,055 feet (2,150 m)) is a high mountain pass on the Montana Idaho border approximately 8 miles due south of Montana State Highway 43 in the Beaverhead-Deerlodge National Forest, Beaverhead County, Montana and Salmon National Forest, Lemhi County, Idaho. This location should not be confused with a sign on Montana Highway 278 at the height of land west of Dillon, Montana that denotes the eastern entrance to the Big Hole valley. The Continental Divide Trail goes over this pass which is about 11 miles south southeast of the more famous Chief Joseph Pass. The Pass can be approached on a Forest Service road, Dahlonega Creek Road (079), from the west, or Forest Service Road #943 from Highway 43 from the east. On their return trip the Lewis & Clark Expedition separated at Travelers Rest in Idaho. On July 3, 1806, Meriwether Lewis headed north to explore the Marias River while William Clark headed up the Bitterroot River with 50 men, Sacagawea and her baby. They crossed Big Hole Pass on their way to their cache of supplies at Camp Fortunate.
Big Hole
The Big Hole, Open Mine, Kimberley Mine or Tim Kuilmine (Afrikaans: Groot Gat) is an open-pit and underground mine in Kimberley, South Africa, and claimed to be the largest hole excavated by hand, although this claim is disputed.
History and size
The first diamonds here were found on Colesberg Kopje by members of the "Red Cap Party" from Colesberg on the farm Vooruitzigt belonging to the De Beers brothers, in 1871. The ensuing scramble for claims led to the place being called New Rush, later renamed Kimberley. From mid-July 1871 to 1914 up to 50,000 miners dug the hole with picks and shovels, yielding 2,720 kilograms (6,000 lb) of diamonds. The Big Hole has a surface of 17 hectares (42 acres) and is 463 metres (1,519 ft) wide. It was excavated to a depth of 240 metres (790 ft), but then partially infilled with debris reducing its depth to about 215 metres (705 ft). Since then it has accumulated about 40 metres (130 ft) of water, leaving 175 metres (574 ft) of the hole visible. Once above-ground operations became too dangerous and unproductive, the kimberlite pipe of the Kimberley Mine was also mined underground by Cecil Rhodes' De Beers company to a depth of 1,097 metres (3,599 ft).
Big Hole (Oregon)
Big Hole is a large maar (explosion crater) in the Fort Rock Basin of Lake County, central Oregon, northeast of Crater Lake, near Oregon Route 31. It is approximately 6000 ft (1820 m) across and 300 feet (91 m) deep.
It is close to another smaller, but less-eroded maar crater, Hole-in-the-Ground.
See also
References
External links
Big Hole (disambiguation)
Big Hole may refer to:
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