|Cornish: Tol pedn|
Granite cliffs at Gwennap Head (Tol-Pedn-Penwith) near Porthgwarra
Gwennap Head shown within Cornwall
|OS grid reference|
|Sovereign state||United Kingdom|
|Police||Devon and Cornwall|
|EU Parliament||South West England|
Gwennap Head (Cornish: Toll Pedn Pennwydh, meaning holed head of Penwith) (grid reference SW3621) is a headland on the south coast of the Penwith peninsula, Cornwall, United Kingdom. It is within the parish of St Levan and approximately 4 miles (6.4 km) south of Land's End, and less than 1 mile (1.6 km) north-west of Porthgwarra, the nearest village. The South West Coast Path closely follows the coastline around the headland.
Its intricate and varied granite cliffs include the famous Chair Ladder crag, making it a popular destination for recreational climbers of all abilities. The older and more correct name for the headland is Tol-Pedn-Penwith (locally "Tol-Pedn" for short) which comes from the Cornish for 'the holed headland of Penwith', referring to the awesome vertical blowhole from the clifftop to a sea cave. From 1888 the name was changed to Gwennap Head, perhaps named after a local family.
The inshore waters around the headland are busy with shipping of all sizes. There is a Coastwatch station on the headland in the former coastguard building. The area is also popular with naturalists who, at the appropriate time of the year, can see rare animals such as chough (Pyrrhocorax pyrrhocorax), great shearwater (Puffinus gravis), basking shark and ocean sunfish (Mola mola).
In the 1840s H McLauchlan reported seeing ″faint traces of a Bronze Age tumulus at the top″ of Tol-pedn-Penwith, although today there are no traces, and the highest point is now occupied by the NCI Coastwatch station. Reports of a cliff castle are considered doubtful, partly because there are no traces but also because the site is considered unsuitable.
There is evidence that the headland has been used as a base for watching ships for centuries. In the museum at Truro there is a photograph of a signal station which has been identified as being on Tol-pedn; the Union Flag dating it to pre-1801. Early maps also show a station here and a photograph shows a two-arm semaphore dating to circa 1900–10. The prominent building that can be seen today, was began in around 1905 as a one storey Coastguard lookout station, and was opened by 1910. A second storey was added to give extra height to the watch room after a French trawler was wrecked at the foot of Wireless Point, Porthcurno on 14 March 1956. The Vert Prairial could not be seen when she was lost and seventeen crew lost their lives. The coastguard station was closed in 1994 and on 21 October 1996 re-opened as NCI Gwennap Head.
There are a pair of cone-shaped navigation markers on Gwennap Head, in line with the Runnelstone buoy. These are day markers warning vessels of the hazard of the Runnel Stone. The cone to the seaward side is painted red and the inland one is black and white. When at sea the black and white one should always be kept in sight in order to avoid the submerged rocks nearer the shore. If the black and white cone is completely obscured by the red cone then the vessel would be directly on top of the Runnel Stone. The black and white landmark was erected by the Corporation of Trinity House in 1821 – an event recorded on a plaque on the back of the marker.
The navigation markers feature as "the Cones of Runnel" in Hammond Innes's thriller "The Trojan Horse".
Wildlife and ecology
Gwennap Head is part of the Porthgwarra to Pordenack Point Site of Special Scientific Interest (SSSI) designated for its vegetation of waved maritime heath, and for being of considerable ornithological interest; especially for passage migrants. It is renowned for its relative abundance of passing marine bird species with many common species such as northern gannet (Morus bassanus), Manx shearwater (Puffinus puffinus), common guillemot, (Uria aalge), razorbill (Alca torda), northern fulmar (Fulmarus glacialis), shag (Phalacrocorax aristotelis) and cormorant (Phalacrocorax carbo). The headland is favoured by birdwatchers and many travel the length and breadth of Britain to track rare seabirds. In July and August there is a chance to see two large shearwater species outside of their breeding season. The great shearwater breeds in the south Atlantic on islands in the Tristan da Cunha group and the Cory's shearwater (Calonectris diomedea) breeds in the Mediterranean, and on North Atlantic islands; mostly among the Azores. Many birds follow the coast as they migrate north in spring to breed or head south in the autumn to overwinter in warmer places. At Gwennap Head many waders, ducks, larks and finches are seen especially during the peak times in May and October.
From 2007 to 2011, the Seawatch SW survey was organised by Dr Russell Wynn with the aim of recording the numbers of targeted species from a designated location close to the cliff edge on Gwennap Head. The survey ran from 15 July to 15 October each year and most of the recording was by volunteers who spent up to twelve hours a day on seawatch. The main targeted species were Balearic shearwater (Puffinus mauretanicus) and basking shark, along with the ocean sunfish (or common mola). Marine mammals such as whales, dolphins and grey seal (Halichoerus grypus) were additional main targets.
Gwennap Head is part of the Land’s End granite massif with shallow, free-draining and acidic soils. The dominant plants of the maritime heath are heather (Calluna vulgaris), bell heather (Erica cinerea) and western gorse (Ulex gallii). Near the edges of the cliff there is martime grassland and includes the red data species, perennial centaury (Centaurium scilloides), and early meadow-grass (Poa infirma), along with the rare hairy bird’s-foot trefoil (Lotus subbiflorus) and yellow bartsia (Parentucellia viscosa). The grassland can be colourful in the spring and early summer with spring squill, thrift, sea campion and kidney vetch in flower followed by the purple and yellow of the maritime heath in mid and late summer.
In 2010 perennial centaury, a national rarity, was refound by Helen and Laurie Oakes. Despite many searches by botanists the species had not been seen in Cornwall (and England) since 1962 (or possibly 1967), and survived on only one Welsh site; coastal footpaths of Pembrokeshire National Park, Wales.  The re-discovery follows the re-introduction of cattle grazing under a HLS Stewardship agreement.
Resident butterflies include Large White (Pieris brassicae), Small Copper (Lycaena phlaeas), Common Blue (Polyommatus icarus), Small Tortoiseshell (Aglais urticae), Peacock (Aglais io), Comma (Polygonia c-album), Small Pearl-bordered Fritillary (Boloria selene), Speckled Wood (Pararge aegeria), Grayling (Hipparchia semele) and Wall (Lasiommata megera). As well as birds, some insects also migrate and butterflies often seen include Clouded Yellow (Colias croceus), Red Admiral (Vanessa atalanta) and Painted Lady (Vanessa cardui). Migrant moths include Rush Veneer (Nomophila noctuella), Rusty-dot Pearl (Udea ferrugalis), Humming-bird Hawk-moth (Macroglossum stellatarum) and Silver Y (Autographa gamma).
- OS Explorer Map 102 - Land's End (B2 ed.). Southampton: Ordnance Survey. 2010. ISBN 978 0 319 24116 5.
- Weatherhill C. (2007) Cornish Place Names and Language. Ammanford: Sigma Press.
- "MONUMENT NO. 421394". Pastscape. English Heritage. Retrieved 15 December 2014.
- "MONUMENT NO. 421355". Pastscape. English Heritage. Retrieved 15 December 2014.
- "History of Gwennap Head". National Coastwatch. Retrieved 15 December 2014.
- Corin, J; Farr, G (1983). Penlee Lifeboat. Penzance: Penlee & Penzance Branch of the Royal National Lifeboat Institution. p. 120. ISBN 0-9508611-0-3.
- "MONUMENT NO. 421393". Pastscapes. English Heritage. Retrieved 15 December 2014.
- "Location". National Coastwatch. Retrieved 16 December 2014.
- "Wildlife of Gwennap Head". National Coastwatch. Retrieved 16 December 2014.
- Lawman, Jean (2002). A Natural History of Land's End. Padstow: Tabb House. ISBN 1-873951-40-X.
- "About SeaWatch SW". SeaWatch SW. Retrieved 15 December 2014.
- "Porthgwarra to Pordenack Point". Natural England. Retrieved 16 December 2014.
- Ian Bennallack (2010). Bennallick, I A; Pearman, D A, eds. "Centaurium scilloides, Juncus subnodulosus and Phegopteris connectilis re-discovered in Cornwall after many years". Botanical Cornwall (Truro: Environmental Records Centre for Cornwall & the Isles of Scilly (ERCCIS)) (14): 36–42. ISSN 1364-4335.
- "UK: First centaury sighting in half a century". Plant Talk. Eden Project. Retrieved 20 December 2014.
- Rylands, Kevin; Mucklow, Claire; Lock, Leigh. "Management for choughs and coastal biodiversity in Cornwall: the need for grazing". RSPB. p. 52. Retrieved 20 December 2014.
- Wynn, Russell B; Brereton, Tom M; Jones, Alice R et al., eds. (2010). SeaWatch SW Annual Report 2009. Southampton: National Oceanography Centre. p. 118. Retrieved 18 December 2014.
- Drayson, Paul (2012). Carey, Andrew, ed. "Over Fifty Years of Observing Butterflies in West Cornwall". The Butterfly Observer 52 (Summer): 17-22. Retrieved 18 December 2014.
- Extracts from A Complete Parochial History of the County of Cornwall, Joseph Polsue, 1868
- Some of the above information is extracted from material on display in the visitors' room at the Coastwatch station on Gwennap Head.