Seasonal route: The road is subject to closure in winter. The Volcanic Legacy Scenic Byway (SR 89) carves a route through grandly scenic northern California wilderness. It's a 130-mile journey that begins at Lake Almanor, encompasses the vast expanses of Shasta-Trinity National Forest and ends in Mt. Shasta's shadow. The highlight of this stretch is the hydrothermal wonders found within Lassen Volcanic National Park.