Altidude is ToddZ

(via Costa Concordia Italian cruise ship sinking: Can it be salvaged? | National Post)

So, if you hadn’t fully realized the bravery of the divers climbing around inside the wreck of the Costa Concordia, consider that at any moment the whole sad colossus could slide off the narrow ledge it’s perched on, roll down a steep underwater slope, and land some 300 feet deep.