Most of the area is mountainous, so the weather is rather cold and becomes really cold from November to February. It is made up of tropical rain forest and deciduous forest at a height of 80–2,152 meters (262–7,060 ft) above mean sea level.
The highlight of this protected area is Thi Lo Su, the largest waterfall in Thailand and one of biggest waterfalls in Asia. Its name means "black waterfall" in Karen language. There are multiple falls, streams and pools to bathe in and whilst the most spectacular time to visit is between July and November, water flows throughout the year. It is located about 3 km (1 mi) from the wildlife sanctuary office.[3]
Apart from Thi Lo Su, Umphang Wildlife Sanctuary also consists of other waterfalls were Pi Tu Kro (heart-shaped waterfall and highest waterfall in Thailand), and Thi Lo Re that lies on its boundary with Thung Yai Naresuan.[4][5]
Location
Umphang Wildlife Sanctuary in overview PARO 14 (Tak)