Venture into the untamed wilderness and pristine rainforests of Kalimantan, the Indonesian part of the island of Borneo. Whether you're embarking on a river cruise along the mighty Mahakam River, encountering orangutans in their natural habitat, or immersing yourself in the indigenous Dayak culture, Kalimantan invites groups to come together and celebrate nature, adventure, and the extraordinary biodiversity of Borneo.