The Hellas Coordinates — Real Mars Geology Behind the Series

25.0°S 70.0°E. Elevation −7,152m. The deepest point on Mars — and everything waiting there.

Hellas Planitia is the lowest point on Mars. At 7,152 meters below the Martian datum, atmospheric pressure is nearly double the planetary average. Water boils at 17°C at the basin floor instead of 2°C at the surface — making liquid water thermodynamically possible in the right subsurface conditions.