On our arrival to the Caves Branch site, we gear up with helmets, waterproof headlamps, and of course, our inner tubes and lifevests. We take a flat 45 minute hike through the jungle before entering one of the many cave entrances and passages that make up the cave system. We hop in the water in our tubes and float through the three cave passages. The river meanders in and out of the caves system and we are carried along by its current to another world. Floating downstream through the cave passages we learn about the geology and ancient history of the limestone cave system. We also learn about the Maya culture and the indigenous inhabitants of the area who have used the caves for ceremonial purposes for thousands of years.