McKenzie Pass and Santiam Pass traverse the stunning Cascade Mountains in Oregon, offering breathtaking views of volcanic landscapes and old-growth forests. This scenic byway is historically significant as part of the Oregon Trail and features lava fields at McKenzie Pass and alpine meadows near Santiam Pass. The road can be closed during winter due to heavy snowfall, but when open it's a rewarding drive for outdoor enthusiasts. Be prepared for winding roads and potential crowds during peak season.