Rhossili Downs is the Gower peninsula's highest hill, rising 193 metres above the Atlantic Ocean, which sweeps its feet at each full tide. The ridge is formed largely from Old Red Sandstone, a rock laid down when the area endured desert conditions around 400 million years ago during the Devonian Period. Over millions of years, folding, faulting and erosion have shaped the high ground seen today, creating the distinctive ridge that overlooks Rhossili Bay. Large swathes of heather almost appear to illuminate the hill during its flowering season, making it a sight as spectacular to view as the Bay and its promontory islet of Worm's Head, which are perhaps Rhossili's more famous landmarks.
