Khaoyai national park

Khao Yai National Park covers more than 2,000 square kilometers of forest and grassland in central Thailand. More than 50 km of hiking and biking trails wind through the long-standing nature preserve, and its many waterfalls include 150m-tall Haew Narok and 20m-tall Haew Suwat. The park also shelters diverse wildlife such as bears, gibbons, elephants and hornbills. It's also the popular place for birds photography.