How the Costa Concordia ran aground

The Costa Concordia cruise ship lies partially submerged off the Italian island of Giglio.on January 16, 2012.
The Costa Concordia cruise ship lies partially submerged off the Italian island of Giglio.on January 16, 2012.

    JUST WATCHED

    How the Costa Concordia ran aground

MUST WATCH

CNN's John Vause explains how the Costa Concordia ended up running aground off the coast of Giglio Island, Italy.