During the 19th century, the Swains family ran Lock 21 of the C&O Canal from this house, in Potomac, Maryland. Now the house is being restored so that travelers can spend the night there, as they can at Pennyfield Lockhouse, the subject of one of my earlier blog posts.
I was interested in the morning light on the rightmost wall, so I rushed to "lock" it in (ha!) before the sun turned its focus on the other wall. As usual, I didn't have enough time to detail everything, but I hope I captured the essentials.