Tags: Crater.
Dao Vallis is a valley on Mars that appears to have been carved by water. It runs southwestward into Hellas Planitia from the southern slopes of the volcano Hadriacus Mons and has been identified as an outflow channel. It and its tributary Niger Vallis extend for about 1200 km (750 mi).It is named after the Thai word for star and it was proposed as a potential landing site for the 2012 Curiosity rover of the Mars Science Laboratory mission.
