Nam Tok Ngao Waterfall National Park, located at Ngao, Mueang, Ranong District, in Ranong Province, in Thailand.
Ranong is on the Kra Isthmus, a narrow strip of land, only 44 kilometres wide, that connects Thailand with the Malay Peninsula, on the west of the Phuket mountain range. It has a long coast on the Andaman Sea. The province, together with Trat Province, is known for being one of the wettest places in Thailand, the rainy season lasting for about eight months. (Source: Wikipedia)