North along the border between Phitsanulok Province and Phetchabun Province, Phu Hin Rong Kla is a national park with scenic attractions and historical significance. In the past, it was the stage of armed conflicts due to political differences between the Thai people. Phu Hin Rong Kla's climate is similar to Phu Kra Dung and Phu Luang. Because of its high altitude, the park is cool all year round. In the cool season, when temperature can occasionally drop to freezing point, mist can cool and pleasant. The deciduous trees and cold flowers attract many tourists.[7]