Virachey National Park Trekking (Deep Jungle Trek)
Virachey National park is one of the Cambodian ASEAN Heritage parks in the North Eastern Cambodia. Virachey is largely unexplored and holds a large assortment of wildlife, waterfall and mountains. It’s also home to beautiful rivers, indigenous tribes and animist villages. These are some of the most remote places in the world, there are no roads, no electricity, usually travelling and trading is done through boats or by walking.
These beautiful locations and villages can be very hard to reach without local rangers and experienced tour guide(s)
Gibbon tours

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Siempang National Park which is closely con heard to. The Virachey national park is home to gibbons and other primates. Gibbon belongs to the family of Apes ,but are smaller, tailless and more agile . The yellow cheeked crested gibbon is native to Cambodia and have their maximum population in Cambodia only.
Other animals which can be seen are macaques sunbeam gaur Pygmy slow Loris
KACHOK Commune Jungle Trek
(Adventure Jungle Trekking And Bamboo Rafting)

Bordering Vietnam and Laos to Cambodia and situated at heart of Virachey forest : Kachok range is Cambodia's most unexplored and one of the world's most remote place, untouched by the Morden life and civilization, it is home to extravagant rivers, ingenious hills, wild animals and local tribes. To reach these place: walking or by boat are the only means. To explore even deeper, you might need to create your own Bamboo raft to travel.
KACHOK (Indigenous cultural tour)

Kachok community is a circle of villages where KACHOK language is spoken. They are an ancient and distinctive culture. Some Kochok’s have Christian faith mixed with the animist culture. The schools have been built in some villages and kids usually start learning from age 9 -12.
Ratanakiri Day tour

Ratanakiri province is located in the eastern part of Cambodia. It’s blessed with great many waterfalls, rivers and a volcanic lake (yeaklom lake). It’s rich in vegetation and agriculture. Banlung is of the important city in Ratanakiri province. The City is tourist friends yet at the same time far away from Main Stream tourism.
For a more local experience you can stay with locals in a home stay.