This story and video are going viral, but in case you hadn't heard:
http://www.sltrib.com/sltrib/news/57012279-78/rock-taylor-formation-hall.html.csp
[youtube]http://www.youtube.com/watch?v=AYFD18BwmJ4[/youtube]
I hope there won't be any copycats, Halloween season and beyond.
I've been a couple times after a suggestion by Scott. It's a fun place! Leave no trace and be safe!
http://www.summitpost.org/goblin-valley/193018
Edit: I now see this is already being discussed in Off-Route.