"Underworld Rafting" is a superb 4 hour award winning black water rafting adventure in the Paparoa National Park. At our Base in Charleston you are fully equipped with wet suits & helmet to travel by "The Nile River Rainforest Train" through primeval rainforest & the towering cliffs of the Nile River Canyon to the Cave. A short climb enables you to enter the enormous unmodified Cave System. In the upper levels you meander through a calcitic paradise of stalactites & stalagmites while in the lower levels you float through awe inspiring glow worm grottos using only the amazing GlowWorm lights as your navigational aid. You emerge in a lost world of forest before leaving the tranquillity for tubing the rushing waters of the Nile River.