There was an item in MR a few years back that showed a backdrop at the end of an aisle that restricted the view from the end of the aisle to stop people gathering there. I think it was “named” a “Berlina Drop” after the layout owner.
Can anyone remember to confirm or correct me please
A quick Interent search for “Bellina Drop” yields this page as a preview from a Kalmbach publication via Google Books. Named for the late Jerry Bellina. I’ve seen it used on a number of layouts (not necessarily merging the valance, just a high foredrop) and it works well.