 Hrad Vallis may have been formed when the large Elysium Mons volcanic complex melted ground ice, as seen by THEMIS. | |
| Coordinates | 38°42′N 224°42′W / 38.7°N 224.7°W |
|---|---|
Hrad Vallis is an ancient outflow channel in the Cebrenia quadrangle of Mars, located at 38.7° north latitude and 224.7° west longitude. It is 825 km in length and was named for the word for "Mars" in Armenian.[1]
- ^ "Hrad Vallis". Gazetteer of Planetary Nomenclature. USGS Astrogeology Science Center. Retrieved 2014-07-11.
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