A Son of the Rock

Niebert is a village in Groningen Province, The Netherlands. Its windmill also had an open day while were were there last June.

Windmill:-

Sketch of how a windmill works:-

I spotted these in a display case inside the  Windmill. At first I thought they might be cigarette cards but no. They are matchbox cards:-

Interior:-

Gearing wheel:-

Stairs. These were quite scary to ascend:-

And to descend!:-

Upper floor:-