The National Park Service is offering a competitive lease of the Armstrong dune shack in the Peaked Hill Bars Historic District of Cape Cod National Seashore in Truro, MA, for private, traditional residential use. The property is offered as-is with no commercial utilities; access requires an NPS off-road-vehicle permit and suitable 4WD vehicle, and the lessee is responsible for maintenance, repairs, sand management, and historic preservation compliance. The lease term may be proposed up to 10 years, with NPS anticipating commencement in late Spring 2027. First-year Fair Market Value annual rent is $10,250, subject to CPI adjustment, and rent may be offset by NPS-approved costs of completed initial improvements. Commercial activity and subleasing are prohibited unless separately authorized, and the existing gravity-fed toilet must be replaced with an approved alternative such as an incinerating toilet.