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Remains of animals which have fallen into the sinkhole since the last ice age lie over 10 metres (33 ft) deep at the bottom of the pit. [ 2 ] Small mammals whose remains have been found in the cave include pikas , jackrabbits , cottontail rabbits , marmots , chipmunks , Peromyscus mice, woodrats , Microtus voles, and collared lemmings .
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.
The second hole was started in January 1983 from a 9,300-metre (30,500 ft) depth of the first hole. [4] In 1983, the drill passed 12,000 metres (39,000 ft) in the second hole, and drilling was stopped for about a year for numerous scientific and celebratory visits to the site. [ 8 ]
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In 2012, scientists exploring blue holes in the Bahamas discovered bacteria deep in the caves where no other life existed, potentially filling the knowledge “gap” on what types of lifeforms ...
Big Hole National Forest was established as the Big Hole Forest Reserve by the U.S. Forest Service in Montana and Idaho on November 5, 1906 with 1,917,100 acres (7,758 km 2). It became a National Forest on March 4, 1907. On July 1, 1908 Big Hole was divided between Beaverhead, Deerlodge and Bitterroot National Forests and the name was ...
The smaller basin in the north is home to the newly discovered northern green anaconda. The newly discovered northern green anaconda lurks in the waters on the Amazon's Orinoco basin. The two ...
The White Sands fossil footprints are a set of ancient human footprints discovered in 2009 in the White Sands National Park in New Mexico. In 2021 they were radiocarbon dated , based on seeds found in the sediment layers, to between 21,000 and 23,000 years ago. [ 1 ]