
Roughly 7,700 years ago, high in the southern reaches of the Cascade Range, the 12,000-foot Mt. Mazama began to erupt with astonishing force. Over the course of several days, the volcano released a towering column of pumice and ash that reached 30 miles into the atmosphere, spewing debris across 656,000 square miles of what is now the western United States and southwestern Canada. (more…)



