Cash Prairie is littered with rocks that, on first glance, look like pumice. But take a closer look, and you'll see it's actually 25 million year old bedrock that tells the story of an ancient volcanic explosion in the region. | Cascade PBS

The Chumstick Basin, a major Eocene-era feature in the Cascade Mountain Range, is a fossilized sandbox, as Nick Zentner puts it. Let's wrap up our exploration of this unique area around Leavenworth! | Cascade PBS