Dún Aonghasa, Inishmore, Aran Islands, county Galway
L 817 098 - Sheet 51
photo by Jim Dempsey
The "chevaux de frise" of sharp, potentially-lethal
upright limestone fragments designed to impede assault...
...and a view from ground-level.
click the photo for an on-line, virtual tour of Dun Aengus with 'Voices from the Dawn'