Looking SE across the NE corner of the fort defences.
see http://www.lynefarm.co.uk/places_of_interest.html--aerial shot of Lyne fort
see http://www.undiscoveredscotland.co.uk/peebles/lyneromanfort/
see also for Castledykes fort http://www.clydesdalesheritage.org.uk/castledykes-roman-fort/