http://www.msn.com/en-us/news/us/indian ... li=BBnb7Kz
A young student was locked inside of Sullivan Cave in Indiana for 60-hours as the rest of his caving group thought he had gone out and locked up the gate. This article shares what he did during those hours. One thing that doesn't totally, make sense from the article is a picking the lock by his parents, rather than them calling in the troops or the explorer's group at the university there. Weird!