Upper Falls ... Waterfalls of Yellowstone
The canyon varies from 800 to 1200 feet in depth and from 1500 to 4000 feet in width. Its length is about 24 miles. The upper 2.5 miles is the most colorful section. Hot spring activity has continued through the ages altering the lava rock to produce lovely colors which are largely due to varied iron compounds. Much more. Check out these photos. Our map and itinerary.