 The Ladon Valles as seen byHiRISE. | |
| Coordinates | 22°36′S28°42′W / 22.6°S 28.7°W /-22.6; -28.7 |
|---|---|
| Dimensions | 278 km long |
TheLadon Valles are a river valley system lying within theMargaritifer Sinus quadrangle (MC-19) region of the planetMars located at 22.6° South and 28.7° West. They are 278 km long and were named after an ancient name for aGreek river.[1]
It has been argued thatUzboi, Ladon, Margaritifer andAres valles, although now separated by large craters, once comprised a singleoutflow channel system flowing north intoChryse Planitia.[2] The source of this outflow has been suggested as overflow from theArgyre crater, formerly filled to the brim as alake by channels (Surius, Dzigai, and Palacopus valles) draining down from the south pole. If real, the full length of this drainage system would be over 8000 km, the longest known drainage path in theSolar System.
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