The Great Orme is a limestone headland on the north coast of Wales, north-west of the town of Llandudno. Referred to as Cyngreawdr Fynydd by the 12th-century poet Gwalchmai ap Meilyr, its English name derives from the Old Norse word for sea serpent. The Little Orme, a smaller but very similar limestone headland, is on the eastern side of Llandudno Bay.