OpenStreetMap
Shows the area marked with osm.org/browse/way/185078387 a facility for obtaing drinking water or is it the ground electrode of HVDC SACOI described on http://web.archive.org/web/20051115115248/www.transmission.bpa.gov/cigresc14/Compendium/SACOI.htm? If not, where is the ground electrode of HVDC SACOI near Bastia?
Discussion
Comment from Oberaffe on 10 October 2012 at 16:58
It looks not like a HVDC earth electrode. e.G. Mundra Electrode
http://maps.google.de/maps?q=22.994585,69.369552&hl=de&ll=22.993667,69.370261&spn=0.007852,0.013937&sll=22.994032,69.37053&sspn=0.007852,0.013937&t=h&z=17
Bhiwadi Eletcrode http://maps.google.de/maps?q=28.00486,77.328352&hl=de&sll=28.00486,77.328354&sspn=0.007531,0.013937&t=h&z=16
Comment from Obelixx on 10 October 2012 at 21:33
There are multiple designs of such electrodes. Not always looks a land electrode like a ring. Some are just a single rod running deepin the ground for example that of HVDC Volgograd-Donbass
http://www.wikimapia.org/#lat=48.6922104&lon=38.9099505&z=18&l=0&m=b http://www.wikimapia.org/#lat=49.0036059&lon=44.5155902&z=19&l=0&m=h
or that of Pacific DC Intertie at its northern end
http://www.wikimapia.org/#lat=45.4976203&lon=-121.0644688&z=18&l=0&m=h
Comment from Obelixx on 10 October 2012 at 21:37
According http://web.archive.org/web/20051115115248/www.transmission.bpa.gov/cigresc14/Compendium/SACOI.htm the grounding electrode system of SACOI on Corse consists of 50 electrodes placed in a distance of 5 metres in a LINE and not on a circle.