Images of the sample at a 10° observation angle with respect to the sample surface at the beginning (top) and the end (bottom) of the experiment after 47 hours of insolation. In the middle of the sample, we placed a hemispherical granular-water-ice structure with a diameter of 40 mm and the same properties as the entire sample. Over time, a crater formed due to insolation, replacing the convex structure with a concave one.