dun aengus

Dun Aengus is a fantastic example of a stone fort which is thought to be over 2000 years old! It is perched on top of a cliff edge about 300 ft above the Atlantic Ocean.
The fort is said to have been built by Aonghusa who was a chief of the Fir Bolg - so it translates as the 'Fort of Aonghusa'.
The impressive stone fort has three enclosures to defend against the enemy. If you look closely enough at one of the walls you will notice vetical, jagged rocks pertruding at an angle. This type of wall is called a chevaux-de-frise and is designed especially to trap the enemy.
The attractions affords magnificent views of the island and the Connemara coastline. It's open all year round and there is a small fee. (The fort is accessed by foot through some uneven terrain so it might not be suitable for the elderly, children or people with disabilities).