taken 7 years ago, near to Balnahard, Isle of Mull, Argyll And Bute, Scotland
A well indicated benchmark
The arrow of this rivet benchmark is really obvious, unlike many. The OS description is: RIVET E PARA BR OVER ALLTAN NA CAILLICH 1.3M N END. The bridge is shown in NM4534 : On the bridge over the Alltan na Caillich.