The Tham Phra is the 25 meters wide; its height is about 10-15 meters which is located near Tham Khang Khaw (The bat's cave). The cave is in long slope upwards shape that you can walk through to the Phu Pha Mhan peak. However, the route is inconvenient, in the cave; there are stalagmites and stalactites, and the large stone columns. The car can come into the cave round the year but here is suitable to visit in the winter season, it is the best time because there is moss on the stones during rainy season and it is quite dangerous.