“They built the Fifth City’s prison in a stalactite the size of a fair-sized village. Food and prisoners come and go from the city far below in a dirigible. Any corpses reckoned beyond recovery are weighted with dripstone and allowed to plummet into the Unterzee, far below.
New Newgate Prison uses a vast number of candles. It is rumoured that prisoners who can arrange for candles to be delivered can gain privileges or even an early release. It’s almost as if they eat the things.”
-Baedeker’s Guide to Subterranean Elements of the British Empire