Khao Chang is a huge mountain resembling a crouched elephant situated behind Phang-ngas former city hall. It is considered a symbol of Phang-nga. Inside the mountain, there is a dark and long cave called Tham Phung Chang which is full of stalactites and stalagmites. Exploring through the dark cave have to be done both on foot and by boat since some parts of the cave are always flooded.
- Hat Thai Muang National Park
- Si Phangnga National Park