Piles of boulders cast long shadows in the floor of the 18.6-mile (30 km) wide Necho crater on our moon. This dramatically-lit image from the Lunar Reconnaissance Orbiter Camera (LROC) shows the final result of a large impact on the lunar surface, and gives a nice example of some of the rugged terrain that can be found there. For an idea of scale, the largest boulder in the upper right portion is nearly 300 feet long; it would pretty much cover a US football field.
Read more about this image on the LROC imaging site hosted by Arizona State University. (And for a zoomable look around Necho crater click here!)
Image: NASA/GSFC/Arizona State University