Entering Mammoth Cave through stunning karri forest via a gently sloping boardwalk, you'll realise just how much there is to see here. Over 10,000 fossils had at one time accumulated inside the cave; and upon excavation, many of these were found to be remains of Australian Megafauna (giant animals) that became extinct around 46,000 years ago. There is even a 50,000-year-old 'zygomaturus' jawbone embedded in the cave wall. Wander at your own pace along the boardwalks and platforms, through the majestic chambers of the cave. As you go, your audio tour provides information on the history, geology and biology of the cave and surrounds. If you visit during winter, you'll see a stream flowing through the cave which flows a remarkable red colour; from natural tannins drawn from the leaf-litter in the surrounding forest. As you leave the cave, you have the option to complete your tour with a walk along the beautiful 'Marri Trail', with a rich variety of song birds and stunning flora displays. Mammoth Cave is much more than a cave - it is a complete nature experience.