Travelers are voting Madison Junction, Lava Creek Tuff and Porcelain Basin as the best of 18 natural features in Yellowstone National Park. There are 4 natural features near Island Park a city just 34 km from Yellowstone National Park and 2 natural features near Ashton which is 48 km distant. The most popular of these are Henry's Fork Caldera near Island Park and Island Park Caldera in Ashton. You can find 134 Natural Feature in the country of United States and Grosvenor Arch is our members favorite Natural Feature in all of United States. Want more? Check out our map of natural features in Yellowstone National Park.