Not St Mary's Chapel

Not St Mary's Chapel, just to the west of Thurso.  Located in a sheltered cove on the north coast, alongside a burn.  The RCHMS has installed a footbridge so the chapel can be viewed from the opposite side of the burn.  They've also installed warning notices - the end wall angles out by at least 5 degrees. 
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Edited later in the day to add:
It turns out that this is just a derelict building - the chapel is further along the path, which wasn't marked well enough for us to notice. So we'll have to go back.