The Aran Islands are 3 rocky isles situated in front of the Cliffs of Moher. They're known for their ancient sites. The largest island, Inishmore, is home to the prehistoric for of Dun Aonghasa, perched on top of a high cliff. Nearby is the Worm Hole, a rectangular natural pool. Inisheer is the smallest. The island is geologically an extension of the Burren. Book your trip to the Aran here