Amphoe Nakhon Thai
Phu Hin Rong Kla National Park
Phu Hin Rong Kla National Park covers an area of 307 km2 in amphoe Dan Sai of Loei province and amphoe Nakhon Thai in Phitsanulok province. The park is located on a mountain range whose highest peak is 1,820 m. The H2331 road goes through the middle of the park and links Nakhon Thai to Lom Kao in Phetchabun province. However, the park authorities will attempt to collect the 200 baht foreigner fee if you try to drive through the park.
caves02
Some Caves in Thailand Part 2 - cave descriptions