The park was originally established as a forest park in 1977 before being upgraded to national park status.
It acts as a critical watershed area that feeds into the Khun Kaeo Reservoir.
The area contains a distinct geological formation of sandstone mountains that influences the flow patterns of the seasonal waterfalls.
The park is home to diverse fauna including barking deer, wild boar, and several species of tropical birds native to the Saraburi region.
Namtok Samlan National Park is a 44-square-kilometer protected area in Saraburi province known for its interconnected tiered waterfalls. The landscape consists of mixed deciduous forest and dry evergreen forest, serving as a catchment area for the region's reservoirs. The park features the Sam Lan, Pho-Thong, and Khao Khrok waterfalls, which flow primarily during the rainy season. It offers a designated campsite for overnight visitors and several nature trails for hiking. The geography is characterized by rugged sandstone mountains and valley plains.
The wooden footbridge overlooking the main Sam Lan waterfall tier.
Visit during the rainy season to ensure the waterfalls have a significant water flow.
Pack insect repellent as the dense forest environment attracts mosquitoes and forest midges.
Bring sufficient drinking water, as facilities are concentrated near the entrance area.
Do not attempt to swim in the waterfall pools during heavy rainfall, as flash floods can occur rapidly.
Maintain silence near camping zones, do not remove forest products, and take all trash out of the park.
