The Izembek NWR was established in 1980. Both communities predate the NWR (King Cove was incorporated in 1947 and Cold Bay began as Fort Randall in 1942)  If I was a betting man I'd wager that there is a qualified RS2477 trail between these communities that dates back to the '40's. If this is the case, the Park Service has no way to stop the use and improvement of this trail.