NASA's Mars Global Surveyor shows some of the platy flow material in the Zephyria region of Mars. The materials have impact craters in them, suggesting that they are composed of solid rock rather than ice.

2 June 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows some of the platy flow material in the Zephyria region of Mars. The materials have impact craters in them, suggesting that they are composed of solid rock rather than ice. Some investigators have proposed that these materials are part of a vast ice-covered lake or sea, but the impact craters formed in the material suggest that it is not ice. Other investigators have cited evidence for an origin by very fluid lavas; some of the evidence includes small volcanoes scattered throughout the region.

Location near: 3.7°S, 195.5°W
Image width: ~3 km (~1.9 mi
Illumination from: upper left
Season: Southern Winter

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