This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Pennyfield Lock No. details. en Pennyfield Lock on the Chesapeake and Ohio Canal In this photo on the right side of the lock one can see the metal bolts originally for wood paneling and the extra concrete on the left side these were used to make the lock deeper Lock was originally feet but made deeper to feet due to silting See