In a secret Paris cavern, the real underground cinema

Mystery is alive and well today.

Police in Paris have discovered a fully equipped cinema-cum-restaurant in a large and previously uncharted cavern underneath the capital's chic 16th arrondissement.

Officers admit they are at a loss to know who built or used one of Paris's most intriguing recent discoveries.

"We have no idea whatsoever," a police spokesman said.

"There were two swastikas painted on the ceiling, but also celtic crosses and several stars of David, so we don't think it's extremists. Some sect or secret society, maybe. There are any number of possibilities."

Guardian Unlimited | The Guardian | In a secret Paris cavern, the real underground cinema