Tales of roaming dinosaurs, ancient fossils and sparkling crystals entertained children at Bracken Hall, Baildon.

Experts at the West Yorkshire Geology Trust, based in Huddersfield, talked young minds through what can be learned from rocks during a school holiday activity day.

Sheila Dyson, a member of the Trust, said the rocks on Baildon Moor told the story of Bradford’s past.

She said: “Rocks define the soil and soil defines the vegetation that grows, and what feeds on that vegetation is sheep. From sheep we get wool and that is the basis of the wool industry.

“I hope that the children went away enthused with geology.”