By the path above the Beck, this is also becoming a pandemic. It’s something of a growing tradition on popular walks. There’s a story of a pub (in the West Country?), where the boys of the village who volunteered in WW1 knocked a coin into the roof beam over the bar. After armistice, the survivors returned and took down their coins for their first pint back. The rest stay there to this day. Maybe this is an echo, although I doubt if many who leave coins know the story. In turn, it’s maybe an echo of the story of King Dunmail’s cairn, where the Iron Age warriors who went to battle left a stone, and collected a stone on their return. The cairn (now a listed ancient monument) is still there, a monument to the number killed.