Hidden Springs Campground Town: Millinocket Address: 224 Central Street, Millinocket, ME 04462 Phone: 888-685-4488 Open: 15-May-15-Oct Sites: 103 Max Amperes: 50 Max RV Length: 40' Facilities: tenting, dump station, store, swimming pool, group area, pets, slideouts, pullthrus Facilities within 1 mile: laundry, other swimming, fishing, lp gas Region: Katahdin/Moosehead Base camp for Katahdin, West Branch, Allagash, North Maine Woods, and Moosehead Area. Stay where all the services of a major town are available, yet the quiet of the Maine forest surrounds you!