Data Dian is the capital city of Kayan Hilir district and this area also close to frontier Malaysia State. The original society of Data Dian is Aborigin. They are the first resident who inhabiting in backwoods of Kayan River, so that the longest River in Malinau regency have estuary to Bulungan Regency is Kayan River. Kayan River area is very famous with rafting that is one rafting activities.
Long Ampung is located in Long Ampung village Long Ampung is stepped aside Kayan River. There is airfield Perintis that in recognize as Lapter Long Ampung in Apo Kayan Area village. In this village dwelt by Dayak Kenyah Lepo Jalau tribes and they very diligent grew crops. And they also have 'Lamin custom' so that its culture is in this area. For tourist who will visit this village can apply plane DAS from Samarinda - Long Ampung.