Remember these things? They used to be everywhere, but they are certainly going extinct these days. I thought that this would be a nice place for a simple P&G before it too goes the way of the dodo. You may even need to explain to any younger cachers with you what these structures used to house.
Cache is small, magnetic hide-a-key, stocked with a pencil at the time of the hide. Please replace as found. This old relic goes mostly unnoticed, but the area can get busy at times.