John Scott wrote to me yesterday with a suggestion.
"Hey, have you ever watched the British program Shaun the Sheep? The creators must have spent eons making the stonemasonry for the set. The farmhouse and barns are amazing but the dry stone walls are spectacular. You should write a thingy about it. It would be great to have the creator Nick Park as a speaker at a DSWAC event talking about how he made the sets.... brilliant. Here's an episode.. watch the opening bit for the house and barn... see a good example of a wall.