 Most of Phitsanulok's forested areas are in the east of the province within Phitsanulok's national parks.There are several natural meadows or "thung" preserved in the province's Thung Salaeng Luang National Park.The majority of inhabited lands in Phitsanulok (i.e., outside the national parks) have been largely cleared of their natural vegetation and adapted for agricultural use, primarily rice farming.