This place was built by nature over a long period. Cause unusual shape of the limestone. Which are being eroded one is a different shape. Large sharp like a razor sharp rock. Have been eroded into deep pools Be named according to its shape that The Pinnacle Club also will find one of the largest caves in the world, at Deer Cave, which is larger than St. Paul's Cathedral in London after five overall. reach the cave of clear water, which is the longest cave in Southeast Asia. And is home to hundreds of bats. Which transports are flying out of the cave and into the woods on a regular basis every year. Evening as the sun goes down! While hiking in this park. Filled with a difficult path. And may take several days. However, returns with a beautiful, very best value in Gunung Mulu National Park.