Udry points out Valles Marineris, the largest canyon in the solar system. The Mars Perseverance rover is collecting a variety of rocks, including sedimentary rocks that can tell us about surface ...

In the Danxia Shan national geopark tens of millions of years of erosion and tectonic activity have sculpted red sedimentary rock into dramatic peaks and valleys. The area is one of the Danxia ...