The Stockport Heritage Trust was there with a display of maps and models explaining about the water tunnels under and connected with Woodbank Hall which was built by Peter Marsland, a cotton magnate, in 1812.
As well as giving demonstrations as to how you can bent metal coat hangers and turn them into divining rods to locate the position of the water tunnels.
There was also a selection of related books for sale and Jim Clare can be seen here explaining a map of the Woodbank Estate.