Offers numerous camping and lodging options. Three seven-person yurts, insu lated canvas tents with wood floors and wood stoves, are available along the west side of Yawkey Mine Lake. Reservations may be made at mndnr.gov/reservations or 866-857-2757. A non-refundable fee is charged for each advance reservation but there is no reser vation fee to reserve a campsite the same day. A total of 29 shaded and open, grassy camping sites are available at the Portsmouth Campground located on the northwest shore of Portsmouth Mine Lake. There are 18 elec tric and 15 non-electric sites available during the regular season. Four walk-in sites a short distance from restrooms, showers, swimming beach and mountain bike trails. Reservations are required at www.dnr.state.mn.us/state_ parks/self_service.html.