Imagine the surprise, then, of the people who rediscovered Royston Cave, quite by accident, in the summer of 1742. A workman, digging foundations for a new bench in the town's butter market, struck a buried millstone and found that it was hiding the entrance to a deep shaft in the earth. This being an age before the dawn of health and safety directives, a passing small boy was promptly handed a candle and sent down on a rope to investigate, while the townsfolk of Royston chattered excitedly above about the prospect of buried treasure.

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