High Quality Content by WIKIPEDIA articles! The Volcanic Legacy Scenic Byway is an All-American Road in the U.S. states of California and Oregon. It is roughly 500 miles (800 km) long and travels through the Cascade Range past numerous volcanoes. It is composed of two separate National Scenic Byways, the Volcanic Legacy Scenic Byway - Oregon and Volcanic Legacy Scenic Byway - California. The latter also wholly includes the Lassen Scenic Byway.