Looking north toward multi-colored Bear Mountain. Like the other mountains in Glacier National Park, Bear Mountain is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 3 mi thick, 50 miles wide and 160 miles long over younger rock of the cretaceous period.

Here is the picture of the old lookout on Bear. The lookout was last manned in the early 1950s and was eventually razed in the mid 1960s.https://www.mtmemory.org/nodes/view/5167