Tham Khao Chang Hai

Tham Khao Chang Hai (ถ้ำเขาช้างหาย) is a limestone cave in Na Muen Si, east of Trang city in Na Yong District. Inside, a winding route passes stalactites hanging from the ceiling and stalagmites rising from the floor. The Tourism Authority of Thailand describes a walking route with lighting. The grounds outside the cave hosted Na Muen Si’s 2026 Luk Lom festival, which featured traditional bamboo wind devices, kite flying and local weaving. For a regular visit, confirm current cave access and any guide arrangements locally. Wear shoes with grip and follow the marked route.