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 .
Oloʻupena Falls
Oloupena Falls, or Oloupena Falls, is a waterfall located in the north-eastern part of Hawaiian Island of Molokai, and is unofficially cited as the fourth highest waterfall in the world, and the highest in the United States.