The geographic feature that dominates the landscape of the Pacific Northwest is the Cascade Range. This mountain range stretches from Northern California through Oregon into Washington and is known for its volcanic peaks, including famous mountains like Mount Rainier and Mount St. Helens. The Cascades are part of the larger Pacific Ring of Fire, contributing to the region's seismic activity. The lush landscapes are marked by dense forests, valleys, and abundant wildlife, largely due to the moist climate. The Cascade Range is significant for recreation, tourism, and ecological diversity, drawing outdoor enthusiasts year-round.