Rock spotting? It beats shopping

If you are a geology nut, you may dream of clambering up volcanoes or searching for dinosaur footprints in China, but sometimes you need go no further than your town centre to experience a cornucopia of fascinating rocks.

Out in the field, geologists may have to trek across difficult terrain to find what they are looking for. But a sharp-eyed pedestrian should be able to spot a wealth of rock types during a short stroll down the average high street.