Tag Archives: Cave

Layser Cave

Located in the Gifford Pinchot National Forest high above the Cispus River and within sight of Mount Adams, Layser Cave is one of the more significant archaeological sites in western Washington State. Found to have been inhabited for over 7,000 years and abandoned approximately 3,500 years ago when Layser Cave, as well as other shelter sites in the region, were inundated by ash and pumice generated by an eruption of Mount St. Helens.
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