GeoGraph - photograph every grid square

Or a roadside service station for our four-footed friends. At least that what it appears to be, as it may also be a parish boundary.
There is a small channel laid into the cobbles which contains water from the adjacent stream. On the face of the wall is a plaque which reads "Parcisses". Below this is "Catel" to the left and "S Sauveur" to the right, now Castel and St Saviour.