Virachey National Park
The Virachey National Park is the largest protected area in Cambodia, stretching east to Vietnam, north to Laos and west to Stung Treng Province. The park has never been fully explored and is likely home to a number of larger mammals, including elephants, leopards adn tigers. Some wildlife experts speculate that there may even be isolated rhinoceroses or kouprey (wild oxen). Rangers also claim there are waterfalls, some as high as 100m, but these are many days’ hike from Voen Sai. Facilities are minimals, but if you contact the ranger post in Voen Sai, it is possible to arrange a customized walk in the area.