Phu Hin Rong Kla National Park is located on the northeast border of Phitsanulok. The park also spreads into the neighboring province of Phetchabun. Once upon a time the park was the focal point of armed wars between the Thai people due to differences in political ideologies.

Even today at Phu Hin Rong Kla, you can see evidence of the wars by way of living quarters, hospitals, schools and other facilities used by the former communists.

The park is known for its strange topography. In some …