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Terra Cimmeria
Terra on Mars / From Wikipedia, the free encyclopedia
Terra Cimmeria is a large Martian region, centered at 34.7°S 145°E / -34.7; 145 and covering 5,400 km (3,400 mi) at its broadest extent. It covers latitudes 15 N to 75 S and longitudes 170 to 260 W.[1] It lies in the Eridania quadrangle. Terra Cimmeria is one part of the heavily cratered, southern highland region of the planet. The Spirit rover landed near the area.
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The word Cimmerium comes from an ancient Thracian seafaring people. The land was always covered in clouds and mist.[2]
A high altitude visual phenomena, probably a condensation cloud,[3] was seen above this region in late March 2012.[4] NASA tried to observe it with some of its Mars orbiters, including the THEMIS instrument on the 2001 Mars Odyssey spacecraft and MARCI on the Mars Reconnaissance Orbiter.[3][4]