Sylvan Lake Campground is located within Custer State Park, South Dakota, and offers breathtaking views of the picturesque lake and the surrounding granite rock formations. The campground is situated in one of the most popular locations in the park, with access to numerous nearby attractions, including hiking trails, rock climbing, and fishing spots.

The campground offers 71 campsites and 9 cabins, with amenities such as picnic tables, fire rings, and access to potable water, restrooms, and showers. Campers can make reservations online or by phone up to one year in advance.

One unique feature of the area is that it was used as a filming location for the movie "National Treasure: Book of Secrets," and visitors can take a short hike to see the spot where the movie's treasure was buried.

The best time to visit the campground is during the summer months (June-August), when temperatures average between 70-80°F during the day and 50-60°F at night. However, visitors should be aware that this is also the peak season, and the campground can get crowded.

Overall, Sylvan Lake Campground offers a beautiful and convenient base for exploring the stunning natural surroundings of Custer State Park.