http://www.10news.com/video/22828316/index.html
This linked video is telling and interesting for a couple reasons.
The friend says that he admitted to molesting the girl in 2000.Up until now we have been under the impression that he did not admit to his guilt, but apprenalty he did.
Also, this friend said that he was always finding new secret locations in secluded areas and taking people to these spots.
So, this to me could be exactly how the location was revealed. perhaps, once he was linked with Chelsea's murder, friends were able to show LE other remote locations that JAG frequented.These secluded spots would not have set off any alarms until he was arrested for Chelsea's murder and that is why no one brought this to LE any time sooner.