As with the Margate Shell Grotto, someone shoved a child into a hole discovered during building works. In this case, the hole turned out to be Royston Cave. It was back in 1742, which was clearly a time when children were totally and usefully expendable. That little tot climbed down into a cave filled with intricate and beautiful carvings depicting the crucifixion, a litany of saints and indecipherable – possibly pagan – symbols. Historians can’t figure out how old it is or what it was used for. Possibilities include a Knights Templar site, a place of Masonic worship and a spiritual centre where two ley lines cross. The mystery is yours to unravel –just bring a kid to push in first.
Katherine’s Yard, Melbourn St, Hertfordshire, SG8 7BZ. Walk from Royston rail. Open weekends, bank holidays and Wednesdays, 2pm-4pm, throughout August. £5, £4 concs.
Image: 67photo/Alamy Stock Photo