Boxwork Ahoy! This Sol 4527 mosaic ⤵️ captures the boxwork structures, where the smooth terrain is criss-crossed by ridges, below the hilltops. ℹ️ science plan science.nasa.gov/blog/sols-45... ℹ️ more insights on the formation of boxwork structures photojournal.jpl.nasa.gov/catalog/PIA2... #Mars 🧪🔭