Castle Lake Campground is a first-come-first-serve campground located in California with stunning views of the surrounding mountains and lake. There are 45 campsites available, with amenities such as picnic tables, fire pits, and vault toilets. Nearby activities include fishing, hiking, and swimming in the lake. The best time to visit is from June to September with average temperatures ranging from 70-80°F during the day and 40-50°F at night. It's a great camping destination for those looking to enjoy the outdoors and picturesque views.