Things that live under rocks: 1) worms 2) 3,000 people in the Spanish town of Setenil de las Bodegas. Wherever you head you'll have this giant slab hanging over you; it blocks the light on the narrow streets and lines the walls of the restaurants. You don't need to be a cagouled geologist to visit – the town is also famous for chorizo, jam and Andalucian wine.