When I was in university, one of my favourite courses was Geology because we got to study amazing and breathtaking phenomena such as the following:
(click image to view full size and then click magnify to see all the awesome detail)
It looks like a close up of some alien reptilian skin, but it isn’t. This is an image of the surface of Mars. It really is one of the most beautiful pictures I have seen in awhile depicting the awesome that occurs as a result of different geological processes.
The description from NASA’s Image of the Day reads as follows:
Martian landforms have been shaped by winds, water, lava flow, seasonal icing and other forces over millennia. This view shows color variations in bright layered deposits on a plateau near Juventae Chasma in the Valles Marineris region of Mars. A brown mantle covers portions of the bright deposits. Researchers have found that these bright layered deposits contain opaline silica and iron sulfates.
Simply beautiful.