One of the national parks in Thailand, the Tham Pla - Pha Suea National Park, is located in the areas of Mae Hong Son town and Pang Mapha district in Mae Hong Son Province. Inside the Tham Pla cave, there is a pool of water that is home to many large fish known as "Pla Mung" or "Pla Khang," which belong to the same family as carp. Tham Pla - Pha Suea National Park encompasses both the Tham Pla and Pha Suea scenic areas, situated within the Mae Pai National Forest Reserve on the right bank. Located in Pang Mapha district, it is a well-known tourist destination.