Crater Lake National Park surrounds the caldera left when Mount Mazama collapsed after a powerful eruption thousands of years ago. Fed by rain and snow, the lake is celebrated for its intense blue color, remarkable clarity, and status as the deepest lake in the United States. Wizard Island, steep caldera walls, and Cascade Mountain views make the park feel both volcanic and serene. Take that unforgettable Oregon landscape with you in a cool Crater Lake shirt from our officially licensed collection.