These northern peaks and parklands are some of the state’s most spectacular and least visited. Mount Shasta is a paradise for outdoor enthusiasts year-round. You can hike or climb to the summit in the summer and ski down its slopes in winter. Shasta Lake, by contrast, is best in summer, when boating, fishing, and waterskiing can fully be enjoyed. Because of its high elevation and rocky terrain, Mount Lassen’s roads are closed late fall-spring, making it a mid- to late-summer destination.