A reveler dances on a stone at the ancient Stonehenge monument on Salisbury plain in southern England June 21, 2012. Stonehenge is a celebrated venue of festivities during the summer solstice - the ... more 

A reveler dances on a stone at the ancient Stonehenge monument on Salisbury plain in southern England June 21, 2012. Stonehenge is a celebrated venue of festivities during the summer solstice - the longest day of the year in the northern hemisphere - and it attracts thousands of revelers, spiritualists and tourists. Druids, a pagan religious order dating back to Celtic Britain, believe Stonehenge was a center of spiritualism more than 2,000 years ago. less