This heart-stopping video shows youngsters risking their lives tombstoning at a notorious site known as Dead Man's Cove. <br /><br />Witnesses filmed the daredevils performing high-risk stunts off Plymouth Hoe in Devon. <br /><br />Footage shows the youngsters plunging 65ft into the sea close to rocks. <br /><br />Simon Fewins, 44, a warehouse manager from Plymouth, Devon, was among a crowd of concerned onlookers on Wednesday afternoon.
