Thorne Island is a Napoleonic Fort in the Pembrokeshire National Park. It has been closed to the public and uninhabited for over 15 years. Thorne is currently undergoing some refurbishment with a view to offering guests a very basic level of accommodation. If you are seeking off-grid adventure, exclusivity, garrison living, amazing scenery and the drama of the Atlantic ocean you will love Thorne. If you want easy logistics, predictability, fluffy towels and safe environments you won't!