Caves, bats, rainforests, waterfalls, and more! The Mulu World Heritage Area in Malaysia showcases amazing geological formations, breathtaking mountain vistas, and unique fauna only found in the park. Those not afraid of heights will enjoy the Mulu Canopy Skywalk which at 480 meters, is the longest tree-based canopy walk. If you prefer to have your feet firmly planted on the ground, try one of the cave tours, hikes through striking pinnacle formations, or the exodus of 3 million bats that stream from the Deer Cave every night!