BENCHMARKS continued
This
one in Edinburgh, Scotland, from Michael Byrne is on a small stone
valve house, at Bonaly Reservoir, which once formed part of
Edinburgh's water supply, but no longer does so.
Below:
The 'mark on a valve house, at Bonaly Reservoir.
Above:
A valve house at Bonaly Reservoir with the 'mark at the bottom
left hand side of the front face.
