Wyoming (60), a North-West State of the American Union, chiefly on the eastern slope of the Rocky Mountains, an elevated region about three times the area of Ireland and a comparatively sparse population, settled principally along the line of the Union Pacific Railway; it has a very rugged surface, and abounds in deep cañons and frowning precipices, the lakes also are deep, and there are immense geysers, one, the Great Geyser, throwing up a volume of water 300 ft. high; it is rich in minerals, yields good crops of various grains, rears large herds of horses and cattle, as well as game on its moors, and trout and salmon in its rivers. See Yellowstone Park.