Fort Darnett's later additions and protected fabric

Alex tentatively identifies a concrete structure on the fort as a Second World War addition. He uses its appearance to infer that the site remained habitable, without verifying that inference from a building history. The island and surrounding land are included in the property discussion. When a participant worries about demolition, the fort is identified as a scheduled monument whose surviving structure would need to be retained. This records the conversation's understanding of the site, without establishing any current permission to alter it.