Depart from San Ignacio, Belize and arrive at the park after driving for an hour. Hike through the jungle, along the river bank and carry your tube up to the starting point. Choose to tube through 1 cave or 2 caves, depending on how far you want to walk. Enjoy the full experience by walking for 45 minutes, to reach the top of the river. Walk for 30 minutes to reach the other starting point, which will only take you through one of the caves.  Float down the river and relax in the first cave, as your expert guide tells you about Mayan culture and their beliefs. Get ready for a thrill in the second cave, accessed by both starting points, where light rapids will add some excitement and speed to your tubing experience. Upgrade your tour by speeding things up with a memorable zipline ride. Before heading into the Mayan underworld, fly and scream in the air as you zip line across the Belize jungles and river from tree to tree. After the Adrenalin rush through the air, cool off in the water of a picturesque natural pool.