The Roman Fort,down in the valley,had just come out of the shade.The road,central in the image,is the Roman Road,now known as the Stanegate,heading towards Carlisle.
The pillar apparently commemorates a local mining disaster.(non-Roman).According to Joan Thirlaway.
Hadrian's Wall ran along the ridge on the rhs of the image.
see http://www.vindolanda.com/
see http://vindolanda.csad.ox.ac.uk/
see http://www.bbc.co.uk/history/ancient/romans/vindolanda_01.shtml