This image was acquired from
flickr. 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:
hadrian's hadrians wall hadrians' wall national trail hadrianswallnationaltrail roman frontier limes northumberland central sector centralsector hwfeed milecastle inscription woodcut monochrome blackandwhite drawing text writing sketch white background cartoon black and white Inscription RIB in two pieces recording the fact that