I’m not sure what this once was, I’m guessing some kind of tide or water level indicator. We found it while walking at the bottom of the cliffs between McArthur’s Head and Proaig in the south east of Islay in April 2009.
Looking tiny against the hills on Jura, the Calmac ferry MV Hebridean Isles on her way to Port Askaig entering the Sound of Islay. McArthur’s Head just around the corner of the shoreline in the foreground on the left.
It’s quite a long climb from the shore of the Sound of Islay to McArthur’s Head lighthouse.