Public domain
Gullies and Boulder Tracks
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
The formation of gullies on Martian slopes is still under debate. Potential mechanisms include the melting of surface water ice, groundwater outbursts, or dry mass wasting processes (landslides). This image shows several shallow gully channels with associated debris aprons emanating from a buried layer on the interior of a crater wall. Also visible are many boulders of varying sizes along the wall, with several exhibiting clear tracks from their journey downslope.
NASA Image and Video Library’s own descriptionCredit lineGullies and Boulder Tracks. NASA/JPL, 2022-09-30. Public domain. ID: PIA25554.
