Aganippe Fossa (Mars)

Classical albedo feature name; "Aganippe's Fountain", legendary home of a Greek naiad

Aganippe Fossa is a surface feature on Mars which runs from 4.1° to 13° south latitude and 124.9° to 126.9° west longitude. Figure 1 shows dark streaks on the slopes. Such streaks are common on Mars. (wikipedia entry)

A fossa is a long, narrow, shallow depression. On Mars they are named after the nearest named albedo feature on the Schiaparelli or Antoniadi maps.