Pennyonguru is biggest cave in this area . This cave is natural monument. This area have not road , therefore we used boat for cross. This cave made short circuit shape on curve part of river. This cave has 1.2km length , average 2-5m wide , 50x50m chamber , many speleothems also.
Unfortunately , this cave submerge by dam several years later.
Entrance is on base of rock wall
We need use boat for what we go to the entrance
Cave entrance
This is most famous speleothem in this cave , it called "fry egg". It is top of stalagmaite.