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 .
Livingstone District
Africa's highest waterfall, Victoria Falls, is found in the Livingstone District. Located by Mosi-oa-Tunya National Park, the waterfalls cascade past Livingstone Island along the Zambezi River. Then, the river passes underneath Victoria Falls Bridge on the road T1. Victoria Falls forms part of the district's border with Zimbabwe.