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Castle Flats Cabin is located on Kupreanof Island on the coastal waters of southeastern Alaska. It offers access to a variety of outdoor recreational opportunities, as well as a secluded place to enjoy its beautiful surroundings.
The cabin is accessible only by boat or float plane from Petersburg, and tides impact access. During low tides, a 2-mile hike is necessary to reach the cabin. Visitors are responsible for their own travel arrangements and safety, and must bring several of their own amenities.
The Castle River Trail is an easy, 1-mile trail that leads first to the Castle River Cabin and continues upstream another half-mile through forest and muskeg. Wildlife can be seen along the trail. Waterfowl, grouse, moose, deer and bear hunting is available in designated seasons as per state or federal hunting regulations; click here for more information from the Alaska Department of Fish and Game. Visitors also enjoy fishing for steelhead from April to May, trout from May to October, and coho salmon in mid-August through mid-September. A small rowboat and oars are provided at the cabin. Life jackets are not provided and visitors must bring their own. Visitors may also choose to bring a small, outboard motor. Crossing the tide flats by boat requires at least a 13-foot tide (local tide tables).
The hunter-style cabin has four wooden bunks and can accommodate up to five people. It is equipped with a table and benches, wood stove and oil heater. The cabin has a covered porch and an outhouse with a pit toilet. Firewood is generally provided, but is not guaranteed. A broom, dust pan, axe and splitting maul are generally available, but may be missing or damaged. Drinking water is not available. The nearest water source is a small stream west of the cabin, but water must be treated or boiled prior to consumption. Visitors may want to bring their own drinking water to avoid the hassle. Heating oil is not provided. Visitors need to bring No. 1 heating oil for the clean-burning oil heater, in addition to sleeping bags and pads, a cook stove and cooking gear, towels, food, clothing and garbage bags, among other necessities. All trash and food must be packed out, and visitors are expected to clean the cabin before leaving. Click here for more cabin details and maps.
The cabin is located on southeastern Kupreanof Island, on the edge of the Castle River tide flat in Duncan Canal. The surrounding terrain is predominantly flat, old-growth forest and muskeg.
A variety of wildlife makes its home in the area, including moose, deer, black bears, waterfowl and grouse. During spring migration, the flats are host to many bird species.
From Petersburg, it is 16 miles by float plane or 30 miles by boat. A 15-foot tide is required for float plane access, and a 13-foot tide is required for boat access. At lower tides, there is up to a 2-mile hike along the tide flat to the cabin.
Castle Flats Cabin can be found on USGS topographic map Petersburg C-4. [Maps](http://ask.usgs.gov/to_order.html) are available online or by calling the Petersburg Ranger District at (907) 772-3871.
Reservations can be made the day of arrival or up to 180 days in advance and are restricted to a maximum stay of 7 consecutive nights per party for any one reservation from May 1 through September 30 and a maximum stay of 10 consecutive nights per part from October 1 through April 30. There are no discounts for Alaska cabin rentals with Golden Age and Golden Passports. Only one change per reservation for all Alaska cabins is allowed. Change is defined as a modification to the start or end date of the reservation; after one change has been made, if additional changes are desired, the customer must cancel the current reservation and re-book the new dates.
