It was a neat feature for a photo walk puzzle. The usual gimmick with those is getting folks to spot something from far away. This post had something unusual: a number in a distinctive font; the number was on the "wrong side" of the post to be visible as teams walked towards it. But as they walked along, they were looking right at a post with a distinctive-font number that was off-by-one from the number they were looking for. So they could figure out they were looking for a lamp post, probably one nearby. It was an "aha" for teams, not the usual photo walk "aha". It was fun watching playtesters figure it out.
Anyhow, I figured out a new landmark, fixed up that puzzle with a new photo. But I'll miss that post.