Bosnian 'energy pyramids' boosted by Djokovic visits

With tree-covered slopes that rise to a pointed summit, the mountain overlooking the Bosnian town of Visoko resembles any other ordinary hillside in the Balkan state. Yet thousands of yearly visitors -- including high-profile stars like Serbian tennis champion Novak Djokovic -- don't see it that way: despite scientists' efforts to debunk the claims, large numbers of people still believe the hill is an ancient man-made pyramid with magical healing powers.