The ‘fun’ bit here, (which takes some reading), is they’ve no clue what these extensive vaults were for. …when we all know that it has to involve evil steampunk schemes, or else it would be well documented somewhere - yep.
Vaults of ambition: shock find under London Museum enchants its builders
Discovery of Victorian network hiding under some of city’s busiest streets set ‘magical’ new challenge for multimillion pound project
Mon 19 Aug 2024 01.00 EDTLast modified on Mon 19 Aug 2024 06.40 EDT
When a contractor working on the site of the new London Museum at Smithfield market knocked a tentative hole in a bricked-up basement wall, all he could see, peering in with a torch, was a muddy pile of rubble and some scurrying rats.
There had been hints on old plans of some underground structures, “but because everything was blocked in and bricked up, we had no idea that they still existed”, said Paul Williams, the principal director of the lead architects, Stanton Williams. …
(grocery storage or horse stabling are posited, but wouldn’t either of those leave behind clear remnants? [suspicious frowny emoji])