Horsetails Falls (there are many others) is found in Thompson Pass between Glennallen and Valdez, Alaska. The weather on the way to Valdez was the worst of the whole trip. We had to take these pictures from inside the car. It was raining so hard that we could not keep our lenses dry. As to other falls with the same name, there is another Horsetail Falls near Whittier, Alaska, one in the Columbia River gorge west of Portland and another In Yosemite National Park. There are also falls with that name in the Ozarks and near Tahoe.