Argyre Planitia
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Argyre Planitia is a plain located within the impact basin Argyre in the southern highlands of Mars. Its name comes from a map produced by Giovanni Schiaparelli in 1877; it refers to Argyre, a mythica
The southern rim of Argyre basin, formed by the Charitum Montes. Adjacent are sinuous ridges, theorized to be glacial eskers. Galle Crater is seen in the background.
Gullies south of Argyre appear to be unequivocal evidence of water erosion
Several levels of alluvial fans, as seen by HiRISE under HiWish program. Locations of these fans are indicated in the previous image.
Small, well-formed alluvial fan, as seen by HiRISE under HiWish program. Location of this fan is shown in an image displayed above.
Hellas Planitia
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Hellas Planitia is a plain located within the huge, roughly circular impact basin Hellas located in the southern hemisphere of the planet Mars. Hellas is the fourth or fifth-largest known impact crate
Argyre Planitia
…approximately 1,700 km (1,100 mi) wide and drops 5.2 km (17,000 ft) below the surrounding plains; it is the second-deepest impact basin on Mars after Hellas. Galle Crater, located on the east rim of Argyre at , resembles a smiley face. The basin was formed by a giant impact event by an impactor around 200…
Viking orbiter image mosaic of Hellas Planitia
Geographic context of Hellas
Apparent viscous flow features on the floor of Hellas, as seen by HiRISE.
Twisted bands on the floor of Hellas Planitia, as seen by HiRISE under HiWish program