Start on the route to this sacred place with a short swim across the Roaring River, followed by a 40-minute hike leading you to the cave's main entrance. The Mayan underworld was one of the three main layers, which they refer to as Xibalba. Actun Tunichil Muknal cave, commonly known as ATM, is located at the Tapir National Reserve.

While in the cave with your Belizean tour guide, you enjoy amazing geological formations such as sparkling stalactites, stalagmites and flowstones.