Asopus Vallis

Asopus Vallis is a valley in the Memnonia quadrangle on Mars, located at 4.4° south latitude and 149.7° west longitude. It is 33 km long and was named after a classical name for the modern Boeotian Asopus river in Greece.^[1]

Asopus Vallis

Asopus Vallis, as seen by HiRISE.
Coordinates	4.4°S 149.7°W / -4.4; -149.7
Naming	a classical name for the modern Hagios River, Greece