Lethe Vallis
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| Lethe Vallis | |
|---|---|
 Lethe Vallis, as seen by HiRISE. Flow was from southwest to northeast. Wider part of Lethe Vallis had less erosive power, so mesas are left behind from pre-existing material. Scale bar is 500 meters long. |
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| Coordinates | 4°00′N 206°30′W / 4°N 206.5°WCoordinates: 4°00′N 206°30′W / 4°N 206.5°W |
Lethe Vallis is a valley in the Elysium quadrangle of Mars, located at 4° North and 206.5° West. It is 225 km long and is named after a river in Katmai National Monument, Alaska, USA.[1]
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