Phujong - Nayoi National Park located in Boon Trick District, Najahlauy District and Num Yuen District, Ubon Rachathani Province. The area is close to Lao People’s Democratic Republic and Kingdom of Cambodia. It is a part of Phanom Dongruk Mountain Range which consists of many big and small mountains such as Phujong Nayoy, Phujong Numsub, Phujong, Phuchun Dang, Phu Plansung and Phu Planyao. There is productive forest inhabited by a great number of animals. The area has naturally beautiful sceneries, and is about 686 squars kilometers or 428,750 Rai.