The frontier was full of rivers that needed taming and mountains begging to be blasted--and our forebears hoisted a hefty bag of tools to help them do it all. But of course, no one expected a frontier so dangerous--or so tempting! Trains, ships, towns--nothing could stop our expansion, until those technological monsters started biting back. Even then, we didn"t always learn, and sometimes, it took massive disasters to teach us some very tough lessons. In this episode, we"ll see how man"s folly, pride, and stupidity led to some of the Wild West"s worst catastrophes.