I would like to know if anyone here can identify the building blocks / stones used to fabraicate the housing sturctures behind the Tiger I. The model is Dragon's 72nd scale Initial Production Tiger I build by Robin Buckland featured on the "Small Scale Models" forum over at the Military Modeling website.

Any assistance regarding information for obtaining these blocks / stones would be very much appreciated. Also any suggestions for a simular building block would be of help. Robin built the generic sturctures to take photos of any small scale model, as he put it "just to make it a little more interesting". He mentions that the stone blocks are real stone, cut into small pieces and recalls that it was sold as a modeling set (Stonecraft) for model railways. I have searched the Internet without any luck of finding them?
-Eddy
