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The Mammoth Site is a museum and paleontological site near Hot Springs, South Dakota, in the Black Hills. It is an active paleontological excavation site at which research and excavations are continuing. The facility encloses a prehistoric sinkhole that formed and was slowly filled with sediments during the Pleistocene era.
The Black Hills is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. [3] Black Elk Peak, which rises to 7,242 feet (2,207 m), is the range's highest summit. [4]
South Dakota Highway 79 (SD 79) is a 209-mile (336 km) state highway in western South Dakota, United States, that runs from Maverick Junction near the Black Hills National Forest to the North Dakota state line.
After a series of devastating wildfires in 1893, U.S. President Grover Cleveland created the Black Hills Forest Reserve on February 22, 1897. [5] U.S. President William McKinley issued a presidential proclamation on September 19, 1898, appending the Black Hills Forest Reserve geographic boundaries while acknowledging the forest preservation decrees established by the Timber Culture Act and ...
The faults and joints are associated with the uplift of the Black Hills approximately 58 to 54 million years ago. After main cave dissolution, a thick layer of calcite lined the walls about 2.5 million years ago. [11]: 12 During cave development and afterwards, speleothems and speleogens formed, including the "jewels" or spar.
The Horsemeat March of 1876, also known as the Mud March and the Starvation March, was a military expedition led by General George Crook in pursuit of a band of Sioux fleeing from anticipated retaliation for their overwhelming victory over George Armstrong Custer's 7th Cavalry Regiment at the Battle of the Little Bighorn. Poorly rationed and ...
On the 4850 Level, the Black Hills State University Underground Campus (BHUC) houses Sanford Lab's low-background counting facility—a class-1,000 cleanroom containing several ultra-sensitive low background counters (LBCs) used to assay materials for ultra-sensitive experiments—and an adjoining workspace can be used for a variety of disciplines.
Inyan Kara Mountain (Lakota: Íŋyaŋ Káǧa, Rock Gatherer [2]) is a mountain associated with the Bear Lodge Mountains of Crook County, Wyoming, (part of the Black Hills) that is considered sacred by the Lakota people, particularly for mothers in childbirth. Inyan Kara stands apart from the main body of the Black Hills, with an elevation of ...