January 19th 2016 One of the most scenic roads in Northern Thailand, favorite among motorcycle riders. Located at Phetchabun Province, the route takes you through Phu Hin Rong Khla National Park. This video covers ride between small town of Nakhon Thai and Phu Taberk Viewpoint. January 17th 2018. Route 2331, through Phu Hin Rong Kla National Park. This part covers part along Loei and Phitsanulok border.