Full title...............Drone footage shows Indonesia tsunami devastation after 10ft wave wipes out a beach festival - sweeping away partygoers, obliterating two towns killing 832...............WARNING GRAPHIC CONTENT: 832 people have been killed after a 6.1 magnitude tremor hit the central Indonesian island of Sulawesi on Friday followed by a massive 7.5 magnitude earthquake Indonesia's disaster agency's Sutopo Purwo Nugroho withdrew an earlier warning to residents of a tsunami But three hours later Indonesia's geophysics agency said there had been one, and hundreds have now died The cities of Palu and Donggala were struck by 10ft waves which demolished houses and