National Geographic : 1940 May
WHEN IRISH SKIES ARE SMILING Ui uvauoIa i al~ayrV pullle ~ ocuICLy ltOlACll[O llr Uy I1allJOIl11 1OWC11 Y% V1KCt BUILT ON THE RINK OF ARAN'S CLIFFS, A FORT \VITIISTANI)S TIME BUT NOT THE TII)E Two thousand years ago a pre-Celtic race constructed this citadel on the largest of the Aran Isles off the Irish west coast. Although the Atlantic has blasted away half the fort, Dun Aengus remains one of the most magnificent barbaric monuments in Europe. Using stone and no mortar, early defenders raised walls yards thick and three times as high as a man. Against what foe they guarded barren Inishmore Island, Ireland's western outpost, no history tells.