This is the towpath, the dirt road along the C&O Canal in Maryland. In its heyday, the canal operated boats pulled by mules, which towed the boats. (I've depicted one of the boats in an earlier blog post, "Waiting for the Mules.") But here I was most interested in the curious question-mark-shaped foliage at the end of the path, so I tried to focus attention there. I also liked the canopy of branches above the path, not to mention the hints of fall colors.