Khao Kho includes various small and large mountains of the Phetchabun range in Khao Kho district. The reason it is called “Khao Kho” is because there are a lot of “Ton Kho” – Mountain Serdang (Livistona speciosa). Due to the chilly temperature throughout the year, and its coolness in the winter with beautiful scenery, it is one of the most famous tourist attractions in Phetchabun.