| Facilities: Mystery Campground provides restrooms. Reservations: Reservations are not accepted for Mystery Campground. Best Time To Visit: Mystery Campground is open April through November. Fees: A camping fee is charged. Accessibility: This campground is not handicap accessible. Rules: The maximum stay is 14 days. Directions: To reach Mystery Campground from Okanogan, start out going southeast on Norman Street for less than 0.1 miles. Turn right onto WA-215 for 0.1 miles. Continue onto WA-215 for 0.9 miles. Continue onto WA-20 for 31.2 miles. Turn left onto Twisp River Road for less than 0.1 miles. From Twisp, go west on primary forest route 44 approximately 16 miles. | 
