"The Cascade Range stretches from Northern California, through Oregon and Washington States, and into southern Bristish Columbia. This line of mountains was created over the course of thousands of years by a subduction zone between Earths tectonic plates. The two highest peaks of the range, Mt. Saint Helens and Mt. Hood, are volcanoes that have experienced recent volcanic activity. Readers will learn more about these two mountains and others that make up the Cascade Range. Amazing photos and primary sources are paired with engaging text to make this a complete reading experience"-- Provided by publisher.