Factory sealed DVD</br></br>Product Description</br></br>In six classic programs?? National Geographic reveals the sheer power and strength of nature's greatest forces. Experience the devastation and tragedy caused by deadly tsunamis and hurricanes?? see what happens inside the heart of a whirling tornado?? witness incredible up-close shots of the powerful white wall of a rolling avalanche?? and hear chilling first-hand accounts from survivors of some of the worst natural disasters. Programs include Storm of the Century?? Tornado Intercept?? Drowning New Orleans?? Avalanche: The White Death?? Tsunami: Killer Wave?? and Violent Earth.</br><br/>http://www.amazon.com/gp/product/B007RMQ53U