Winding engine drum, on a Worseley Mesnes 1926 winding engine, one of a pair at Blaenant Colliery, Neath Valley.
Photographed in 1978.
This picture was taken using a large format camera. There was no available light and the winding wheel was black.
The picture was made using a very long exposure and the winding wheel was 'painted' with light for several minutes.