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  • curprev 04:59, 13 May 2021‎ Suitupandshowup talk contribs‎ 1,476 bytes +1,476‎ The Source Region of the Outflow Channel Ravi Vallis (1°S,42°W) This mosaic of the head of Ravi Vallis shows a 300-kilometer-long portion of the channel. Like many other channels that empty into the northern plains of Mars, Ravi Vallis originates in a region of collapsed and disrupted (“chaotic”) terrain within the planet's older, cratered highlands. Structures in these channels (slides #24 and #25) indicate that the channels were carved by liquid water moving at high flow rates. The abrupt...
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