Khao Chang Hai Cave is a large cave. It has a height of 150 meters from the ground, a length of 850 meters and can be divided into 6 caves: Khao Chang Hai Cave, Pheka Cave, Sai Thong Cave, Ong Cave, Mae Tao Klai Cave, and Lom Cave. Moreover, inside the cave it is easy to travel. bright light And it’s also not very far from Trang city.