Public domain
Protonilus Mensae Glaciation
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
During periods in Mars' history when the planet had greater axial tilt, shifts in atmospheric circulation may have favored the extensive accumulation of snow in some locations. Protonilus Mensae is just such a site of extensive glaciation. We can see a flow of material through the valleys between a complex of small mesas. Streamlines and flow fronts appear as subtle ridges. Some ridges appear perpendicular to the mesas indicating flow direction.
NASA Image and Video Library’s own descriptionCredit lineProtonilus Mensae Glaciation. NASA/JPL, 2021-04-27. Public domain. ID: PIA24613.
