The crystalline Ichetucknee River flows six miles through shaded hammocks and wetlands before it joins the Santa Fe River. From the end of May until early September, tubing down the river is the premier activity. October through March scuba diving is available in the Blue Hole only (you must be cave certified). Picnic areas, equipped with tables and grills, are available throughout the park. A full-service concession offers food, refreshments, and outdoor products from Memorial Day through Labor Day. Tubes plus snorkeling and diving equipment can be rented from private vendors outside the park.