Union Falls in Yellowstone National Park. miles - Moderate to Difficult. At a height of 260 feet, Union Falls is the second highest waterfall in Yellowstone. Its unique shape makes it one of the park's most picturesque landscapes. Combine this hike w
“ Uncle Tom’s Trail, Yellowstone National Park ” Though it’s not a trail in the most traditional sense of the word, and is really just a series of sturdy metal steps total), Uncle Tom’s Trail is a perennial favorite of visitors to Yellowstone.