The towering cliff of black rock by the Phong River looks like an owl or Nok khao in Thai. It is 125km from downtown Khon Kaen. The best location to see the owl-shape cliff is at the orchid nursery of the Forestry Department on the other side of the road. There is another nearby place of interest known as Namtok Tat Ron, or Namtok Tat Hong as it is called by local dialect name. The 70m-high waterfall is located in neighbouring Loei province on the boundary of Phu kradueng national Park, Phu Pha Man National Park and the Phong River. The sound made by the waterfall when cascading onto a huge a large stone slab beneath is how the waterfall derived its name.
- Open days
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday