| Site of Special Scientific Interest | |
 Penninnis Head with lighthouse | |
  Location within Isles of Scilly | |
| Location | Cornwall |
|---|---|
| Grid reference | SV911094 |
| Coordinates | 49°54′19″N 6°18′10″W / 49.9053°N 6.3029°W |
| Interest | Biological and Geological |
| Area | 16.1 hectares (0.161 km2; 0.0622 sq mi) |
| Notification | 1971 |
| Natural England website | |
Peninnis Head (Cornish: Penn Enys, meaning Island Head) is the southernmost point of St Mary's, Isles of Scilly.[1] The headland is within the Isles of Scilly Area of Outstanding Natural Beauty and part of the Heritage Coast. It is also a Geological Conservation Review site for its Quaternary geomorphology and was first designated a Site of Special Scientific Interest (SSSI) in 1971 for both its biological and geological interests.[2] All of the land designated as Peninnis Head SSSI is owned by the Duchy of Cornwall.[3] On the tip of the headland is a squat lighthouse built in 1911 by Trinity House as a replacement for the 17th century lighthouse on St Agnes.[4]
The Gilstone, a prominent rock off the eastern side of Peninnis Head, should not be confused with a rock of the same name in the Western Rocks.
- ^ Ordnance Survey: Landranger map sheet 203 Land's End ISBN 978-0-319-23148-7
- ^ "Peninnis Head (St. Mary's)" (PDF). Natural England. Retrieved 31 December 2011.
- ^ "Mapping the habitats of England's ten largest institutional landowners". Who owns England?. 6 October 2020. Retrieved 28 September 2024.
- ^ Parslow, Rosemary (2007). The Isles of Scilly. London: HarperCollins.