Ridges in Lycus Sulci

This image shows a group of curved ridges in an area called Lycus Sulci, which is located near the Olympus Mons volcano. Much of the rocks in this area have been subjected to erosion (e.g., scouring and removal) by the wind, so that the surface we see today was originally buried deep underground. Ridges such like these typically form underground through diagenesis, a process where water flows underground and minerals start to form from chemicals within the groundwater.