Caves : Or, you may want to explore Pha Khong Cave. There are lots of stalactites inside. To get in there safely, you better contact a guide and has a flashlight with you. And you shouldn’t get there during rainy season, as there will be stream flowing through the cave, which will block your way.
Waterfalls : Chilling out near Ton Tong Waterfall is also a great idea. This is a limestone waterfall with 3 levels, all together is about 60 metres high. Beside of this one, there are still many other waterfalls in the area, for examples, Wang Pian Waterfall, Phu Fah Waterfall, Tad Luang Waterfall etc.