NASA's Mars Global Surveyor shows a ring marking the location of a nearly-filled, nearly-buried impact crater on the martian northern plains on Mars. Remnants of bright, seasonal frost occur in some polygonal cracks on the plain.

18 August 2006
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a ring marking the location of a nearly-filled, nearly-buried impact crater on the martian northern plains. Remnants of bright, seasonal frost occur in some polygonal cracks on the plain.

Location near: 62.9°N, 96.0°W
Image width: ~3 km (~1.9 mi)
Illumination from: lower left
Season: Northern Spring

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