Mount Holmes Yellowstone National Park

In 1930, this one story foot by 16 foot building was constructed on a concrete foundation.
The base is of uncoursed rebble masonry. The upper portion is of frame construction with a hip roof.

In 1934, the lookout was Ed Hall. He had few visitors but a red fox visited daily as he put meat and other food scraps out for it.

In 1935, panoramic images were taken from the lookout site. This year, Edward Hall took his new bride to the lookout for the summer. Leaving Mammoth Hot Springs, the nearest ranger station more than 20 miles from the peak, the couple covered the first 12 miles by motor, then took to the saddle for the eleven-mile trail up the sleep slope. When the trail became too steep, they had to dismount and continue on foot leading their mounts. Food supplies, reading matter, warm clothing, and scientific instruments all concentrated into their smallest possible space made up their entire equipment. Twice a week, wood, water and mail will be packed up to them by saddle trail.

In 2019, the lookout completely burned as a result of a lightning strike on July 16.