Namtok Chet Sao Noi National Park () is a national park in Thailand, with a total area of 26,238 rai ~ covering Muak Lek district, Wang Muang district, Saraburi province and Pak Chong district, Nakhon Ratchasima province.

Geography and history Namtok Chet Sao Noi or Chet Sao Noi waterfall () is a small waterfall. The waterfall flows along a stream and has seven tiers (hence the name seven little girls), but there are many different stories about the waterfall names. The height of each tier is approx four m (13 ft), with spacious, shaded swimming areas available underneath.

It has been upgraded from the forest park to be the 129th national park of Thailand on 26 December 2016 and is the first site in the King Rama X's reign.

Sights Namtok Chet Sao Noi Muak Lek Creek Tree Tunnel The tree tunnel on the bend of Highway 2089 (Muak Lek–Wang Muang) making it over 200 m (656 ft) long.

Flora and fauna Namtok Chet Sao Noi is covered in tropical rain forest, including such species as Pterocarpus macrocarpus, Sterculia foetida, Bombax ceiba, Garuga pinnata, Senna garrettiana, Senna garrettiana, Ficus carica, Holarrhena pubescens and Fernandoa adenophylla.

Animal species include serow, jackal, marten, small civet, porcupine, palm civet, hare, ground squirrel, striped squirrel, flying squirrel, mongoose, pangolin, black baza, palm swift, shrike, snail-eating turtle, house gecko, monitor lizard, water monitor, python, birdwing.

Location Namtok Chet Sao Noi National Park in overview PARO 1 (Saraburi branch)  National park  1 Namtok Chet Sao Noi  2 Namtok Sam Lan   Wildlife sanctuary  3 Sap Langka  Non-hunting area  4 Kaeng Khoi  5 Khao Erawan  6 Khao Somphot  7 Khao Wong Chan Daeng  8 Khuean Pasak Jolasid  9 Wat Phai Lom–Wat Amphu Wararam10 Wat Tan En   Botanical garden11 Phu Kae

See also List of national parks of Thailand List of Protected Areas Regional Offices of Thailand

External links DNP - Namtok Chet Sao Noi National Park

References