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 lithograph sketch drawing cartoon illustration blackandwhite black and white MacLauchlan's survey of Carvoran as reproduced in Collingwood Bruce's The Roman Wall . MacLauchlan's survey