Thung Salaeng Luang National Park, National park spanning mountainous regions in Phitsanulok and Phetchabun Provinces, Thailand
Thung Salaeng Luang is a national park spanning mountainous regions across Phitsanulok and Phetchabun Provinces with diverse topography featuring limestone hills, slate formations, and hardpan soil. Elevations range from 300 to 1,028 meters (984 to 3,373 feet), creating varied landscapes with different vegetation zones.
The park was established in 1963 as Thailand's third national park and became significant in regional history. From the late 1960s through the early 1980s, it served as a base for guerrilla fighters, an important chapter in the area's modern past.
The name comes from Strychnos nux-vomica trees that grow throughout the region, reflecting how Thai people traditionally name places after local plants they find important. As you walk through the landscape, you notice these trees scattered across the terrain.
The park is only accessible by private car since no public transportation serves the area and GPS navigation often fails. Plan for longer travel times and verify routes locally before heading out.
Tham Phra Wang Daeng in the western section is Thailand's longest cave system, extending deep underground for several kilometers. This underground formation offers visitors a different experience from the park's surface trails.
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