Worm's Head

Worm’s Head is a limestone headland at Rhossili on the Gower Peninsula in Swansea. It stretches roughly one mile from Inner Head to Outer Head, with Middle Head between them. The three parts are joined by a natural causeway that appears only at low tide. Its name comes from the Old English word for sea serpent, wyrm, describing the shape of the ridge. The Inner Head is up to 200 yards wide, while the whole feature is made of carboniferous limestone. The Devil’s Bridge, a collapsed sea cave, lies on the Middle Head.

The headland has drawn writers and visitors for centuries. Dylan Thomas once wrote of it as “the very promontory of depression” after being stranded overnight by the tide. In September 2020 seven Swansea University students had to be rescued by the RNLI after misjudging the incoming tide. Storm Éowyn in January 2025 brought another rescue of seven students from the same spot. The tides rise quickly, making the crossing dangerous without careful timing.

Visitors walk along the narrow ridge when the causeway is exposed. The views stretch across Rhossili Bay and the Bristol Channel. The limestone cliffs show layers of rock shaped by the sea. Seabirds nest on the ledges, adding to the wild atmosphere. The Outer Head offers the furthest western point of the peninsula. At low tide the whole headland becomes an island again, cut off until the next low water.