This VIS image show part of Cyane Fossae, located near Alba Mons. The linear feature is bounded by faulting, creating a feature called a graben. The multiple crater-type forms may indicate that the graben served as a location for volcanic flow. The round features typically form where the roof of a lava tube has collapsed.
Orbit Number: 64224 Latitude: 32.658 Longitude: 242.966 Instrument: VIS Captured: 2016-06-06 00:41
http://photojournal.jpl.nasa.gov/catalog/PIA20805