ThePrintPod: Mars may have oceans’ worth of water underground, but this doesn’t mean it’s ready to be colonised

A study published in journal PNAS indicates that 3 bn yrs ago, much of the water on Mars percolated through soil & got stored in the crust, but this water remains largely inaccessible.----more----https://theprint.in/science/mars-may-have-oceans-worth-of-water-underground-but-this-doesnt-mean-its-ready-to-be-colonised/2225623/