What animal did Lewis and Clark newly discover during their 1804 expedition up Old Baldy in Nebraska?
Black-tailed prairie dog The black-tailed prairie dog ("Cynomys ludovicianus"), is a rodent of the family Sciuridae found in the Great Plains of North America from about the United States-Canada border to the USA-Mexico border. Unlike some other prairie dogs, these animals do not truly hibernate. The black-tailed prairie dog can be seen above ground in midwinter. A black-tailed prairie dog town in Texas was reported to cover 64000 km2 and included 400,000,000 individuals. Prior to habitat destruction, this species may have been the most abundant prairie dog in central North America. This species was one of two described by the Lewis and Clark Expedition in the journals and diaries of their expedition.
Great Falls (Missouri River waterfall) Great Falls (also called Grand Falls or Big Falls) is a major waterfall located on the Missouri River in western Montana in the United States. It is the lowermost and largest of the eponymous Great Falls of the Missouri, at 87 ft high and up to 900 ft wide at peak flow. Although the falls used to flow powerfully year-round, most of the water is now diverted to the 60 megawatt hydroelectric plant of upstream Ryan Dam, reducing it to a trickle in the summer months. Grand Falls was named by William Clark of the Lewis and Clark Expedition in 1805.