A few years ago Claire and I traveled the Silk Road from Beijing to Istanbul on our tandem bicycle. In a small town in Azerbaijan, we saw this door sill with three horseshoes attached, pointing to the street. In the U.S. some people attach a horseshoe over their front door, point up, for good luck, and/or prosperity. We were, as usual ignorant in the local language, and unable to ask what this means. Not knowing is sometimes more interesting than knowing all. But I wouldn’t mind if someone from the Caucasus area would tell us.