"In 1966 Andy Dufresne escaped from Shawshank Prison. All they found of him was a muddy set of prison clothes, a bar of soap, and an old rock hammer damn near worn down to the nub. I remember thinking it would take a man 600 years to tunnel through the wall with it. Ol' Andy did it in less than twenty."
Red explains how Andy managed to dig himself a getaway tunnel out of Shawshank in a relatively short time.