Worm’s Head is a promontory shaped like a giant sea-serpent marking the westerly tip of Gower. The island is joined to the mainland by a rocky causeway called The Devil’s Causeway. A large flat-topped ’Inner Head’, leads to a natural rock bridge called ’Devil’s Bridge’, a ’Low Neck’ leading further out to the ’Outer Head’. The headland is one mile long and the highest point is approximately 150 feet. The jagged Devil’s Causeway is only exposed for two and a half hours, so walkers should always check the tide times before they set off.