The township is noted for its long fortified headland, which the ruins of Duntulm Castle presently sit.[2] Duntulm is coastally composed of a series of bays and onlooked by Cnoc Roll, a small hill standing 122 m above sea level with a radio mast.[5] Cairidh Ghlumaig is renowned for its outcrop of the type section of the Middle Jurassic aged Duntulm Formation (c. 170 million years old), which contains several trackways attributed to long-necked sauropods.[7] Duntulm was originally a Pictish fortress, forming one of a chain of duns or forts stretching along the north coast of the Isle of Skye.It was not until the 16th century that the Lords of the Isles finally seized the territory and Donhall Gorm (Blue Donald) the chief (great-grandson of Hugh of Sleat), took up residence there and carried out considerable improvements to the fort.