What specific lunar feature concentrates and preserves water ice in the South Polar Region?

Answer

Permanently shadowed regions (PSRs) within deep craters that act as cold traps.

Water ice is concentrated in areas that never receive direct sunlight because the Moon has almost no axial tilt. These permanently shadowed regions function as highly efficient cold traps where temperatures plummet dramatically.

What specific lunar feature concentrates and preserves water ice in the South Polar Region?

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