This is a daymark, built by Alan Stevenson in 1847. The cage is intended to be a refuge for shipwrecked mariners. See http://canmore.rcahms.gov.uk/en/site/306941/details/east+vows+beacon+firth+of+forth for more information.
Uploaded to Geograph by Rob Burke on 30 March 2013
Photo © Rob Burke, 30 March 2013. Licensed for reuse under this Creative Commons licence