"When I say it's one of the more significant sites on the Forest, I mean it. This site here was the site of the biggest engineering failure in California history. Second greatest loss of life in California history. It's a State Historic Landmark already. There's a lot of communities that have memorials. As the water worked its way out, back to the ocean ... it left destruction along the whole path. There's lots of communities that have monuments, along the way, that recognize the significance of the disaster.

"We don't have sign."

— David Peebles, Heritage and Tribal Relations Manager, Angeles National Forest-San Gabriel Mountains National Monument