Don2 (Don1 Revised)
Contributor
Lake of liquid water detected beneath surface of Mars
https://www.youtube.com/watch?v=d6hBHuKRw_c
https://www.youtube.com/watch?v=d6hBHuKRw_c
https://arstechnica.com/science/2018/07/possible-lake-spotted-under-a-polar-ice-cap-on-mars/Possible lake spotted under a polar ice cap—on Mars
Radar indicates that Mars may have analogs of Earth's subglacial lakes.