Head for adventure in Belize! Go cave tubing at Jaguar Paw in Belmopan. Float down the river on an inner tube with only a headlamp to light your way. This journey through an underground cave system requires visitors to maneuver around stalagmites jutting from the river and stalactites looming from above.
Nohoch Che’en Caves Branch (Belize). 'After entering the Nohoch Che’en Caves Branch you’ll float through an underground network, experiencing wonders unseen in the world above, from eyeless cave fish, to stalactites and strange Maya paintings high on the cave ceilings.' http://www.lonelyplanet.com/belize