The Sudwala Caves are between Waterval-Onder and Nelspruit. When you pass through their main entrance, in the forest that flanks the Mankelekele ('High-on-Hogh') mountain, you'll find yourself in an amazing labyrinth that takes you down into the bowels of the earth. These caverns were formed over a period of more than a million years, during which water seeped slowly through the rock and dissolved the dolomite. The wonderful drip stone formations have names such as the Screaming Monster, the Weeping Madonna, Nick the Devil, Samson's Pillar and the Rocket Silo. . The Dinosaur Park, with its extraordinary sculptures and models of some of the fearsome creatures that roamed the earth millions of years ago. The models are scattered throughout the park, among indigenous trees and ancient cycads.