Not a super sangar i'm afraid, this is just a plain old "MARS Sangar". The super sangar as you call it or "MARS2000" as it was officially named had sloping sides including sloping "retrofit" windows to enable greater visability by the sentry.
Just to clarify a common mistake, Borucki was called by his second name, Robert. His grave is in a cemetery just S of Sheffield, and I called in there last year after a long time away, to find the headstone in a bad state. Somewhat saddened, I made enquiries and found out that post 1945 graves are dealt with by the MoD at Imjin Barracks in Gloucester (new home of ARRC). I wrote and emailed photos over, and they immediately confirmed he came under their remit, and have sent regular updates on the contractor reports in cleaning up the stone etc. So, some sections of MoD are top notch, and report in any Mil Graves that have suffered over the years.
I don't know if any members of his family are still alive, the grave was unattended and unkempt, so I put some flowers sourced locally in the village on it and thought awhile. 76 was a long time ago, nice lad. I drove away with the Police's Invisible Sun blasting outa the window, & memories of hard-targetting etc etc....Happy Days? Well, different days at least.
And today, we get the same drip drip of 'Another British Soldier'...on the news, and buried within page 6 . I go into a cold sweat. But the politicians are smiling, so that's alright then...