Khao Yai National Park (Thai เขา ใหญ่.) - National Park in Thailand. It is located mainly in the province of Nakhon Ratchasima, and contains part of the provinces of Saraburi, Prachinburi and Nakhon Nayok. It is the country's first national park, established September 18, 1962. An important role in its creation played Boonsong Lekakul, one of the most famous figures of Nature Protection of the XX century in Thailand. Park is the second largest in Thailand. It covers an area of 2168 square kilometers, including evergreen forests and meadows. The height varies from 400 to 1000 m above sea level. There are 3000 species of plants in the park, 320 species of birds and 67 species of mammals, including Asiatic black bear, Indian elephant, gaur, tigers, gibbons, sambar deer, Indian muntjac deer, and wild pigs. Waterfalls include the 80-meter Heo Narok and Haeo Suwat, received recognition in the film "The Beach". Namtok Sarika is most popular among Thais.