Today Opportunity has driven to within 20 meters of Santa Maria crater, and the blocks around it are really, really cool-looking. This one is a dead ringer for the severed tail of an alligator (a comparison that UnmannedSpaceflight.com member Sunspot made first, but which I think will occur to a lot of people on their own). And no it's not really an alligator's tail. Or a stegosaurus'. It's a rock.
So, readers, quickly, before the conspiracy theorists get a hold of these photos: what shapes do YOU see in these rocks? Here's two more images from the Navcam panorama with lots of neato rocks: 1, 2. And here's a nice version of the full four-frame Navcam panorama from Opportunity's current position, assembled by Jan van Driel. One more drive should put her in a position to see inside the crater! Steady as she goes!