May 04, 2012 09:28 AM ET
For years, geologists have puzzled over mysterious boulders that litter the desolate coastline of Ireland’s Aran Islands. When nobody is looking, the massive rocks somehow move on their own.
What unseen hand is capable of ripping a multitude of heavy boulders from the craggy cliffs below and tossing them so far inland? . . . Read complete report
