People look on as the capsized cruise liner Costa Concordia lies on its side next to Giglio Island September 16, 2013. Engineering teams began lifting the wrecked Costa Concordia liner upright on Monday, the start of one of the most complex and costly maritime salvage operations ever attempted. The so-called "parbuckling" operation will see the ship rotated by a series of cranes and hydraulic machines, pulling the hulk from above and below and slowly twisting it upright. REUTERS/Tony Gentile (ITALY - Tags: DISASTER SOCIETY MARITIME TPX IMAGES OF THE DAY)