Copy of a labelled sheet from a photogrammetric survey of Piel Castle, showing elevations of the north keep wall and the north and north-west buttresses
- Date:
- 1980 - 1987
- Location:
- Piel Castle, Barrow, Piel Island, Barrow-in-Furness, Westmorland and Furness
- Reference:
- MP/PIE0059
- Type:
- Photogrammetric Survey