Gemina Lingula
What Gemina Lingula is
Gemina Lingula is a lingula — a tongue-shaped extension of a plateau — on Mars, 773 km across, centred at 81.9° N, 2.6° E in the Mare Boreum quadrangle. It is the 125th largest named feature on Mars and the 1st largest of its class there.
Where the name comes from
Classical albedo feature name. The International Astronomical Union approved the name in 2007, under the theme it applies to every lingula on Mars. Of the 5 features of this class catalogued on Mars, the naming categories run Latin (2), Greek (2), Roman (1).
What it would take to settle Gemina Lingula
Mars scores 26.6 as a world. That number is the same for every square metre of it — but sunlight, water, radiation and the ground under your feet are not. This is the same question asked at 81.9° N, 2.6° E.
What this spot has going for it is water — inside the polar zone where Mars keeps its ice. What works against it is sunlight — 45% of the sunlight the sunniest latitude on Mars gets.
Computed from Gemina Lingula's catalogued latitude, longitude and feature class — 74% of the model's weight had a basis here, and 2 axes were dropped as not applicable to Mars (radiation geometry, earth link). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Mars and are already counted in the world's own index, not again here.
What this cannot see: elevation. Slope, local shadowing and the polar “peaks of eternal light” — ridge tops near the poles of a barely tilted world that catch sun almost continuously while a crater floor kilometres away never does — need a terrain model this does not have. Where a real mission targets a pole, that is usually why.