West Side of Big Spirit Lake Marble Beach’s campground is the largest in the Iowa Great Lakes region. Open year round, the campground is well shaded and features paved roads, boat ramps, modern restroom and shower facilities, as well as a sanitary dump station. There are a total of 224 campsites, 100 with electrical hookups and 124 non-electric sites. Advance campsite reservations can be made through the park reservation system. Half of the campsites are available for self-registration on a first-come, first-serve basis. Marble Beach has a paved trail that runs the length of the park and is connected with miles of area recreational trails. Spirit Lake is the largest natural lake in Iowa and provides some of the best fishing in the state. Anglers will find challenging sport pursuing a variety of game fish, including walleye, northern pike, muskellunges, smallmouth bass, white bass, perch, bluegills, crappies, catfish, and bullheads. Crandall’s Beach provides a fine place for young and old to sunbathe and spash in the clear water of Big Spirit Lake, and is located just north of Marble Beach.