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Asopus Vallis, as seen by HiRISE.
|Naming||a classical name for the modern Hagios River, Greece|
Asopus Vallis is a valley in the Memnonia quadrangle on Mars, located at 4.4° south latitude and 149.7° west longitude. It is 33 km long and was named after a classical name for the modern Boeotian Asopus river in Greece.
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