Found two Bofors gun emplacement in the Bordon Hampshire area, one found a while back with radar trailer near by left by the Canadians and a recent one yesterday that was thought to be demolished but is still there hidden under the undergrowth about 100 yards from thought location. Both structures are built the dame from concrete block work about waist high, in the usual pattern with small square section like a small room lower in the emplacement inside the structure, there seems to be a step leading down. Not sure what this was for, a tea room for the crew or a communication room or just for equipment or ammunition. Not sure if this had some for of tin roof or was open. I thought the ammunition was stored inside the emplacement in the square openings surrounding the gun. Each emplacement has an opening for the gun to be wheeled in place, not being a fixed gun. Anyone know how these emplacements were used?
If you can be more precise about the location Topfmine I may be able to find a lidar image for you - you never know there may be more for you to find.
Whatever you have to hand should be fine - or perhaps just mark it on a streetview screenshot so others can follow.
Looking at the sample of AA gun site plans in Dobinsons AA Command I would say this looks more like an emplacement for a heavy AA gun rather than a Bofors. For the location, try gridreference finder.com and we can see if it corresponds with any of the locations listed as well
SU 79551 33803 Reference Woolmer Forest, Walldown Road, Whitehill, East Hampshire, Hampshire, South East, England, GU35 9AD, United Kingdom
I make that south of Liphook Road, on the line of Walldown Road. Location Map. Grid Reference Finder Unfortunately this free resource has a mixed success with mature trees but reveals some interesting looking lumps and bumps in the wider area. LIDAR Map of England and Wales, built with UK open data 3D view of 1km square around SU7959933769 using UK lidar data
Shame there are trees in the way of this Lidar site, yet i have seen the same size trees on another area picked up by Lidar that don't feature the trees. I assume that if this Bofors site was for a bigger 3.7 gun it would have bolt lugs in the centre.
Certainly I have seen all the undergrowth removed myself on other images - it depends upon the technology used I suspect, and being a free resource, this is unlikely to be leading edge. Perhaps try contacting a local archaeology group to see what resources they have to hand.
Very simply 'Lidar' can be typically supplied as either dtm or dsm. What you are seeing is dsm, ie a digital surface model that shows all the reflections returned to the scanning source so will show buildings, trees etc. On the other hand, dtm data has been processed to subtract the reflections that were returned quickest relative to a second wave of reflections that can be assumed to be the solid ground. In reality it can only be accurate up to a point and areas of fresh new growth typically pose the most challenges. I think the Environment Agency site has both sets to download but you need specialist software to display.
