Polylimnio: The “Blue Lake” of Messinia, Peloponnese (videos-photos)
Between mountains and trees somewhere in the Peloponnese hides a complex of lakes and waterfalls
NASA Research identifies dozens of underground lakes on Mars
"Either liquid water is common beneath Mars’ south pole, or these signals are indicative of something else"
Saturn’s moon Titan may have “Phantom Lakes” and caves
NASA: "Titan is the only world outside the Earth where we see bodies of liquid on the surface"