A prominent natural landmark for emigrants on the Oregon Trail, Scotts Bluff, Mitchell Pass and the adjacent prairie lands are set aside in the 3,000 acre Scotts Bluff National Monument, near Gering, Nebraska. This site preserves the memory of the historic Oregon, California and Mormon Trails. The monument museum contains exhibits about the human and natural history of the area and also holds a unique collection of watercolor paintings by the frontier photographer and artist William Henry Jackson.