Several Boy Scouts were exploring in Porter's Cave, Alleghany County, Virginia and apparently became confused and unable to find their way out. The local volunteer rescue squad was summoned when the group failed to exit on schedule, but the lost cavers were found and led out before the rescue squad arrived.
NSS News, December 1989 (Part 2) V47N12, Page 320.
Ted Andrus "Porter's Cave - Video Trip" RASS Register May 1988.
No analysis has been done.