Maningrida is an Aboriginal community in the heart of the Arnhem Land region of Australia's Northern Territory. Maningrida is 500 km east of …Maningrida is an Aboriginal community in the heart of the Arnhem Land region of Australia's Northern Territory. Maningrida is 500 km east of Darwin, and 300 km north east of Jabiru. It is on the North Central Arnhem Land coast of the Arafura Sea, on the estuary of the Liverpool River.