The discovery of the skylights and their associated caves was made using archival data from three NASA missions, showing how important findings can be made years or even decades after a mission has ended.

Evidence of ancient life on Mars could be hidden away in colossal water-carved caves

Source: space
Source Link: https://www.space.com/astronomy/mars/newfound-water-carved-caves-on-mars-could-hide-evidence-of-past-red-planet-life