Namtok Chet Sao Noi National Park, National park in Saraburi and Nakhon Ratchasima provinces, Thailand
Namtok Chet Sao Noi National Park is a national park spread across Saraburi and Nakhon Ratchasima provinces in Thailand, centered on a waterfall that drops in seven distinct tiers through tropical forest. Hiking trails connect the different levels of the waterfall, passing through dense tree cover the whole way.
The area was managed as a forest park before being officially designated as Thailand's 129th national park in 2016. This change reflected a broader government effort to bring more forested areas under formal protection across the country.
The Thai name of the waterfall translates to "seven girls," a reference to a local legend in which seven young women are said to have been transformed into the falling streams. Visitors passing through nearby villages may still hear this story told as part of everyday conversation about the place.
The trails leading to the different waterfall tiers can be slippery from water spray, so sturdy shoes with grip are a good idea before setting out. Visitors who prefer a shorter outing can enjoy the lower tiers without walking the full trail.
Route 2089 passes directly through the park and for around 650 feet (200 meters) is completely covered by a canopy of trees meeting overhead, forming a natural shaded tunnel. This section can be enjoyed from a vehicle, making it one of the few parts of the park accessible without any walking.
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