The western extremity of the Gower is guarded by this mile-long tentacular promontory, which turns into an island at high tide. Worms Head takes its name from the Old English wurm, meaning "dragon." Seals bask around its rocks, and the cliffs are thick with razorbills, guillemots, kittiwakes, fulmars and puffins during nesting season (April to July).
There is a five-hour window of opportunity (2½ hours either side of low tide) when you can walk out across a causeway and along the narrow crest of the Outer Head to the furthest point of land. Check the tide tables posted at the Rhossili Visitor Centre carefully. Among those who have spent a cold, nervous night trapped here was the young Dylan Thomas, as he relates in "Who Do You Wish Was With Us?," from Portrait of the Artist as a Young Dog. If you do get stuck, do not try to wade or swim back: currents are fierce and the rocks treacherous.
