The name 'Lan Hin Pum' translates directly to 'field of pump rocks' in reference to the circular, protruding stone formations.
The protrusions were formed by the differential erosion of sandstone strata, where softer rock layers weathered away, leaving harder circular cores intact.
During the 1970s, the surrounding area was a strategic stronghold for the Communist Party of Thailand, leaving behind various historical remnants in the national park.
The site features a specific type of rock weathering known as 'tafoni' or honeycomb weathering, which contributes to its unique aesthetic.
Lan Hin Pum sits within a high-elevation zone of the Phetchabun Mountains, often experiencing temperatures significantly lower than the rest of Phitsanulok province.
Lan Hin Pum is a unique geological formation located within Phu Hin Rong Kla National Park in Thailand. The site is characterized by an expansive, elevated sandstone plateau covered in distinct, circular, pump-like protrusions. These natural formations were created by the erosion of rock layers over millennia, resulting in a fractured, pockmarked surface. The area is historically significant as it once served as the base for the Communist Party of Thailand during the 1970s. Visitors can explore a network of walkways that traverse the rock field, allowing close-up views of the unusual stone structures. The site is situated at a high altitude, contributing to a cooler climate compared to the surrounding lowlands.
The elevated viewing platform at the edge of the plateau looking back across the field of stone bumps.
Wear sturdy, closed-toe walking shoes as the rock surface is uneven and can be slippery when wet.
Bring a hat and sunscreen, as the plateau is completely exposed to direct sunlight with minimal natural shade.
Carry sufficient drinking water, as there are limited facilities directly on the plateau itself.
Do not attempt to walk off the marked wooden pathways, as the terrain is rugged and sensitive to human erosion.
The area may be periodically inaccessible during the peak of the rainy season if park management deems the trail conditions unsafe.
Maintain silence to preserve the park's natural quietude; do not climb on or deface the fragile rock formations.
