Dat Mui Vietnam Village River Boat Tour. Dat Mui is a village commune, in the Ngoc Hien district, Ca Mau province of Vietnam. In Dat Mui, you can find the Cape Ca Mau National Park, which is surrounded by complex water canals that run into the Pacific Ocean. On my first time visiting a Vietnam Village I get on a boat ride with the villagers from Đất Mũi to discover the canals that lead up to the Cape Ca Mau National Park in South Vietnam.