Sorry - I meant the turn on/offs are almost right angles - I first noticed it at Kursk a few years back where the military silos/hangars have a great hi-speed set of taxiways - but when they reach the runway they have to almost stop and turn 90 degrees to line up.............
It looks like it could be south of Tula/ Ryazan and N of Rostov - but that's a hell of a large bit of countryside - about the size of W Europe