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 .
List of waterfalls of Australia
Wallaman Falls in Queensland are Australia's tallest permanent waterfall with a plunge of nearly . Wollomombi Falls in New South Wales are second with a combined drop and Ellenborough Falls, also in New South Wales, is third plunging as a single drop.