Expeditions & surveys; Railroad surveys; Rocky Mountains; Lewis and Clark National Historic Trail
Drawing depicts a view of the Rocky Mountains, looking westward. Point (a) marks the Lewis and Clark Trail, and point (b) marks Heart Mountain. Plate LXIII.
A conical mound near the center of a beautiful prairie called the "Deer Lodge". The mound stands "about thirty feet high, around the base of which are innumerable springs of hot water. On top of the mound a spring three feet in...