USGS SIM 3477: Geologic Map of the Athabasca Valles Region, Mars
The Athabasca Valles region of Mars was long thought to be the result of a large flood. However, there was much debate about whether the features in this area were from a flood of water or a large eruption of blisteringly hot, runny lava. Today, many scientists interpret the terrains in the Athabasca Valles as young flood basalts, with the geologically recent Athabasca Valles “flooding” event flowing across the landscape, leaving a series of detailed, pristinely preserved geologic interactions visible in the region.