Underground river is a World Heritage Site inscribed by UNESCO on December 4, 1999. The Worlds Longest Navigable Underground River and Now One of the 7 Wonders of Nature. The primary tour destination PPUR has the worlds navigable Underground River with its spectacular rock stalactites and stalagmites formation that made it to be among the UNESCO WORLD HERITAGE SITE and awarded as RAMSAR site. Tour inside the cave would cover the first kilometer of this 8.2 km Underground River known to be the longest navigable in the world .

Not recommended for travelers with spinal injuries

Not recommended for pregnant travelers

Not recommended for travelers with poor cardiovascular health

Suitable for all physical fitness levels

Pls note that the entrance to the cave is handled by the government managing the underground river cave and there may be extended waiting times for the Underground River tour. This popular attraction can experience high demand, and as a result, wait times may be longer than usual during dates where there are cruise ship arrivals.

The tour is subject to weather conditions.

We would like to inform you that in the event of adverse weather conditions, the tour operator may need to cancel the tour for safety reasons. Should this occur, we will offer you alternative tour options or assist you in rescheduling for another date, depending on your availability.