An extraordinary feature of Inishmore is the puffing holes or blow holes. Not like the blow holes that are used for the Cliff Diving but there are other blow holes in various parts of the island such as down in the very south eastern part such as near Glassan rocks which is one of the locals favourite fishing spots. These blow holes are spectacular and water can be seen spraying up through them on stormy days. There are three blow holes in total, all are within 100m of each other.