The Phu Hin Rong Kla National Park is in the area around the Phu Thap Boek mountain. The park overlaps the borders of the,Phitsanulok and Phetchabun provinces. Most of the mountain is covered in mixed evergreen forest and there are also some farms on its slopes. The area around the mountain is part of the Luang Prabang rain forest.
Phu Thap Boek is home to the Hmong hill tribe, who come from the northern part of Thailand. There are many photos and travel reviews about the sea of mist, mountains and Phu Thap Boek.
From December to January, during the cool season, the hills are covered in cherry blossoms, making it the perfect time to visit. During the rainy season, mist covers the hills both day and night, earning it the name of “the Misty Town”.
To the south of Phu Thap Boek is the district of Khao Kho. It is nicknamed “The Little Switzerland of Thailand”and is a mountainous region with cool weather throughout the year. During the colder winter months from November to December, the visitors are recommended to have warm cloths as the temperatures can be quite chilly in the night, early morning and early evening