Courtesy of WWE.com:
Throughout history, the WWE Universe has seen matches contested in steel cages, Hollywood backlots and junkyards. Yet there is one type of contest so dangerous that it has never been held in WWE. The Scaffold Match is exactly as it sounds — a platform is suspended above the ring and two competitors compete on said surface until one of them throws the other tumbling to the canvas below.
When Mick Foley was infamously thrown off of the top of Hell in a Cell at King of the Ring 1998 by The Undertaker, it wasn’t a stipulation of the match — it was a risk. It takes a special kind of crazy or a very bitter grudge to engage in a contest with the potential to be thrown off a scaffold. WWE Classics examines five of the most memorable — and wildest — Scaffold Matches in sports-entertainment history.
Read the rest of the article here:
http://www.wwe.com/classics/classic-lists/history-scaffold-matches