Estimated to be at least the second-longest cave system in the country at 12.5km (it still hasn’t been explored to its terminus), Odessa-Tumbali Cave is for advanced cavers only. It can only be visited with permission from the tourist office in Tuguegarao and you must be accompanied by guide. Access requires a 7km hike from Callao Cave, followed by a 30m rappel into a sinkhole.
Lonely Planet's must-see attractions
1.66 MILES
The most accessible part of the area's immense 25km limestone cave complex is the seven-chambered Callao Cave. The cave is reached by 184 slippery steps…
Nearby North Luzon attractions
1.66 MILES
The most accessible part of the area's immense 25km limestone cave complex is the seven-chambered Callao Cave. The cave is reached by 184 slippery steps…