more at scitech.quickfound.net "Department of Agriculture... The video focuses on the formation of limestone caves featuring the singular effects in Lehman Caves, to create a better understanding of the beauty and importance of the great caves of America and their geological study." Public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization. en.wikipedia.org Great Basin National Park is a United States National Park established in 1986, located in east-central Nevada near the Utah border. The park derives its name from the Great Basin, the dry and mountainous region between the Sierra Nevada and the Wasatch Mountains. Topographically, this area is known as the Basin and Range Province. The park is located approximately 290 miles (470 km) north of Las Vegas and p! rotects 77180 acres (31230 ha). The park is notable for its groves of ancient bristlecone pines, the oldest known non-clonal organisms; and for the Lehman Caves at the base of 13063-foot (3982 m) Wheeler Peak. President Warren G. Harding created Lehman Caves National Monument by presidential proclamation on January 24, 1922. It was incorporated into the national park on October 27, 1986. There are a number of developed campsites within the park, as well as excellent back country camping opportunities ...
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