a site formed by the collapse of Mount Mazama after a massive eruption 7,700 years ago. Although the last known volcanic activity in the region occurred 4,800 years ago, seismic data indicate that ...

Your first glimpse of Crater Lake is absolutely breathtaking! Its deep blue waters are unmatched anywhere else. How did ...

More than 7,700 years ago, an ancient volcano named Mount Mazama erupted and caused the peak to collapse in on itself. Over the centuries, snowmelt and rainwater filled the yawing crater to create ...

Incredible hikes, mammoth volcanoes, and spectacular views ... Home to remarkable remnants of the destroyed stratovolcano Mount Mazama, this lesser-known national park in the Cascades of southern ...