Layser Cave is a significant archaeological site. Animal bones, stone tools, Olive shell beads (from the coast) found on the floor of the cave and buried in the soil layers enabled experts to piece together a history of more than 7,000 years (one of the oldest in Washington State). The cave was discovered by forest worker, Tim Layser in 1982. The cave is only about 60 x 40 feet (18 x 12 meters) in size. It was apparently abandoned about 4,000 years ago about the time of a large eruption at Mount St. Helens and never reoccupied.