Yellowstone National Park
Yellowstone National Park has one of the world's largest petrified forests, trees which were long ago buried by ash and soil and transformed from wood to mineral materials. This ash and other volcanic debris are believed to have come from the park area itself as the central part of Yellowstone is the massive caldera of a supervolcano. The park contains 290 waterfalls of at least , the highest being the Lower Falls of the Yellowstone River at .
Mount Oberlin
Mount Oberlin () is located in the Lewis Range, Glacier National Park in the U.S. state of Montana. Mount Oberlin is just northwest of Logan Pass. Below the summit to the northwest, water and melting snow off Mount Oberlin lead to the Bird Woman Falls, one of the tallest waterfalls in Glacier National Park.