Wilson Butte Cave

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Wilson Butte Cave
Wilson Butte Cave appears as an air bubble in a sea of lava
Wilson Butte Cave is located in Idaho
Wilson Butte Cave
Wilson Butte Cave is located in the US
Wilson Butte Cave
Nearest city Hunt, Idaho in Jerome County
Coordinates 42°47′06″N 114°12′51″W / 42.78500°N 114.21417°W / 42.78500; -114.21417
WILSON BUTTE CAVE Latitude and Longitude:

42°47′06″N 114°12′51″W / 42.78500°N 114.21417°W / 42.78500; -114.21417
NRHP reference # 74000741 [1]
Added to NRHP November 21, 1974

Wilson Butte Cave is located on the Snake River plain in Jerome County northeast of Twin Falls and southeast of Shoshone. Listed on the National Register of Historic Places as an archeological site, it is maintained by the Bureau of Land Management (BLM).

A round bubble in appearance, it pops up from a flat wide bed of ancient basalt lava. An inflationary or uplift cave is inside the bubble. While archeologists are uncertain of exact dates prior to 10,000 years ago, evidence has been found that native peoples lived at Wilson Butte Cave at least 10,000 years ago. Artifacts found here provide the oldest evidence of human presence on the Snake River Plain and are among the oldest such evidence in all of North America. [2] [3] Archeologists are fairly certain that the reason the cave was settled so early is that it was used as a base from which to hunt bison. [2] Strong connections have been found to the Fremont culture and the Shoshone people, who lived there after the Fremont peoples. [4] Vegetation in the region was very similar to modern times. Camels and giant ground sloths once roamed this region. [5] Deposits here are believed to have been undisturbed until amateurs discovered them in 1958. Two of the major excavations of the cave were conducted by teams led by Ruth Gruhn; one in 1959–1960 and one in 1988–1989. Gruhn dates the site's earliest occupation to 14,000–15,000 years ago. [6]

Wilson Butte Cave protrudes like a rocky bubble on a vast, level sea of ancient lava

The lava of the area is a dark gray to black fine-grained basalt. The cave is in a lava tube developed in a pressure ridge in the flowing lava. The source of the lava is Wilson's Butte, which is about one half mile southeast of the cave. The lava is more than 15,000 years old, as determined by radiocarbon dating of a camel bone from within a lava tube cave. The bone had tool markings indicating working by humans. [7]


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