2ndwitch: Having now returned to a computer and therefore being able to type and update, with regret I have decided to archive this cache.
It was one of my favourite hides, as the ground allowed a natural hiding spot with naturally occurring camouflage. Sadly someone has damaged the location quite badly, and then possibly tried to 'hide' the cache again by piling stones on the spot. The stones were totally out of keeping with the location and drew the eye immediately to the hiding place. Not surprisingly the cache has vanished.
It has to have been taken on purpose - it was clearly marked and was not a container that would appeal for other uses really, and although I searched the surroundings extensively I could not find it just thrown away.
I cannot reinstate the location, so the cache goes.