A guide can be organised with the Ministry of Natural Resources and Environment and is highly recommended.
After about an hours walk through the dense jungle you'll discover the entrance of the cave where there are dozens of pe'ape'a (little swiflets) flying around the entrance. A half hours spelunking later through the pitch-black cave will bring you to the opening on the other side.
After about an hours walk through the dense jungle there is a dry river bed, a few hundred meters down the river bed brings you to the entrance of the cave where there are dozens of pe'ape'a (little swiflets) flying around the entrance.
Some agile rock climbing brings you down into the immense cave. after about a half hours' spelunking through the pitch-black cave, you will come to the opening on the other side.
A torch, good footwear and plenty of water are recommended.
Negotiate with the guide
Dry season only - April to November