Underground Lake Reported Beneath Martian South Pole.

— “This really qualifies as a body of water. A lake, not some kind of meltwater filling some space between rock and ice, as happens in certain glaciers on Earth.”
- Roberto Orosei, Ph.D., Astrophysicist, Italian Nat'l. Institute for Astrophysics

— “We are not closer to actually detecting life, but what this finding does is give us the location of where to look on Mars. It is like a treasure map — except in this case, there will be lots of  'X's  marking the (underwater) spots.” - Manish Patel, Ph. D., Senior Lecturer,  Science, Technology, Engineering & Mathematics, U. K.'s  Open University