The Thumb Camping Area is located in the San Bernardino National Forest, California. This campsite is situated on the southern shore of Big Bear Lake and offers stunning views of the surrounding mountains and lake. Nearby points of interest include the Big Bear Solar Observatory, the Big Bear Discovery Center, and the Alpine Slide at Magic Mountain. The campground amenities include vault toilets, fire rings, and picnic tables. The Thumb Camping Area operates on a first-come-first-serve basis, and there are 25 campsites available.

An interesting fact about the Thumb Camping Area is that it is named after the unique rock formation that resembles a thumb on the lake's shoreline. The best time to visit is during the summer months between June and August when the average temperatures range from 70°F to 80°F. However, visitors can also enjoy the fall foliage during September and October when the temperatures range from 50°F to 70°F.

Overall, the Thumb Camping Area is an excellent spot for anyone looking to immerse themselves in nature while enjoying a breathtaking view of the lake and surrounding mountains.