MORRISON, Colo. (CBS4) – A woman is in critical condition after falling at Red Rocks Friday night.

West Metro Fire says a 27-year-old woman fell 20 feet from a rock formation outside the amphitheatre. It happened during a performance for the band Ghostland Observatory.

The woman was rushed to St. Anthony Hospital.

West Metro says it does not appear the victim was trying to get a better view of the concert. It took nearly an hour to find the woman.

“We had several reports of different locations within this ravine where she could be located and the bottom of the ravine was covered with vegetation,” Mike Berg with West Metro Fire said. “Our search was hampered by dark and by multiple reports at multiple locations.”

It’s the third time in just the last year that someone’s been hurt or killed climbing the rocks.

Last summer a 20-year-old woman died falling from on top the rocks. The formations around the popular park are clearly marked off limits.

“It’s an on-going issue and I think the bottom line is people have a responsibility to comply with that law,” Mike Berg with West Metro Fire said.

Last September several people were injured at a concert when they were hit by rocks supposedly loosened by someone crossing the no-hiking line.

The victim’s name hasn’t been released.