SH2082 : South Stack lighthouse

taken 3 years ago, 4 km from Holyhead/Caergybi, Isle of Anglesey/Sir Ynys Mon, Great Britain

South Stack lighthouse
South Stack lighthouse
This light flashes once every 10 seconds*. These days, it is more economical to keep it switched on permanently rather than turn it off during the day. There is always a spare bulb which will flip into place automatically when the current bulb fails. I was amazed at how small a bulb was needed to generate light visible 30 kilometres away!

Usually the light is 'blocked' on the landward side - but here the landward side is just a cliff, and the light is not a distraction for any local residents.

Two ferries on the busy Holyhead / Dublin (or Dun Laoghaire) route are seen on the horizon.

* Lighthouses all have their own unique 'signature' of flashes so that passing mariners know which one they are looking at!
Creative Commons Licence [Some Rights Reserved]   © Copyright David Purchase and licensed for reuse under this Creative Commons Licence.
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SH2082, 258 images   (more nearby )
Photographer
  (find more nearby)
Date Taken
Saturday, 6 September, 2014   (more nearby)
Submitted
Wednesday, 10 September, 2014
Geographical Context
Coastal  Islands 
Primary Subject of Photo
Lighthouse 
Subject Location
OSGB36: geotagged! SH 2021 8225 [10m precision]
WGS84: 53:18.3956N 4:41.9903W
Camera Location
OSGB36: geotagged! SH 2045 8225
View Direction
WEST (about 270 degrees)
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Image classification(about): Geograph
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