 | Breccia with Large Clasts In this beautiful image there appears to be a breccia layer, or a layer composed of rock fragments embedded in a finer material. |
 | In the Transition Zone Erosion and the formation of small scarps reveal a multitude of layers within the subsurface. |  | A Trough within Ladon Basin This trough, and others around the perimeter of the basin, were probably produced during the gradual sinking of the materials here. |  | Expanded Craters on Icy Terrain One interpretation of the expanded craters is that a group of small impacts, probably secondary craters from a much larger primary crater, exposed the clean, shallow ice in this region. |