Nestled in the mountains at an altitude of more than 3,000 feet, Clear Lake is known for its exceptionally clear water, which allows visitors to see the unique petrified forest that lies beneath the lake's surface. A picturesque hiking trail runs around the lake's perimeter, and kayakers and canoers can paddle across the water for a birds' eye view of the underground trees. Visitors will have to purchase a Recreation Pass in order to enjoy some of the day-use areas around the lake, and there's also a small fee for anyone who wants to launch their own boat onto the water.