Phu Chong-Na Yoi National Park

Phu Chong-Na Yoi National Park
อุทยานแห่งชาติภูจองนายอย
IUCN category II (national park)
Huai Luang Waterfall,
Location within Thailand
Location	Ubon Ratchathani Province, Thailand
Nearest city	Ubon Ratchathani
Coordinates	14°32′0″N 105°23′9″E / 14.53333°N 105.38583°E / 14.53333; 105.38583Coordinates: 14°32′0″N 105°23′9″E / 14.53333°N 105.38583°E / 14.53333; 105.38583
Area	686 km²
Established	1987
Governing body	National Park, Wildlife and Plant Conservation Department

Phu Chong–Na Yoi National Park is a protected area at the eastern end of the Dângrêk Mountains, northeastern Thailand. It is in Buntharik, Na Chaluai, and Nam Yuen districts of Ubon Ratchathani Province. Established in 1987, it is an IUCN Category II protected area, measuring 686 square kilometres (265 sq mi). In a mountainous area, the park borders Laos and Cambodia. Natural features include the cliffs at Pha Phueng, and the 40 metres (130 ft) Bak Teo Yai Waterfall. In 2004, a specimen of a new frog species, Fejervarya triora, was discovered in the park.