Roper Valley is not a city, but a valley located in the Northern Territory, Australia. It is situated between the Gulf of Carpentaria coastal plains and the sandstone plateau of Arnhem Land. The valley is known for its rugged landscape, including cliffs, gorges, and escarpments. The Roper River, which flows through the valley, is a major waterway in the region and provides opportunities for fishing and scenic views. While there are no cities specifically located within Roper Valley, nearby towns include Mataranka and Katherine.