NASA's Mars Global Surveyor shows landforms on the floor of Antoniadi Crater on Mars. The circular features were once meteor impact craters that have been almost completely eroded away.

16 February 2005
This Mars Global Surveyor (MGS) Orbiter Camera (MOC) image shows landforms on the floor of Antoniadi Crater. The circular features were once meteor impact craters that have been almost completely eroded away.

Location near: 21.6°N, 297.4°W
Image width: ~3.0 km (~1.9 mi)
Illumination from: upper left
Season: Northern Summer

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