Move the stones
From Fallen London Wiki
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From: The Rat Legion
It will take a great deal of labour to move this much black stone to your lodgings. But the effects could easily be worth it.
Unlocked with 
Facing the Rat Army exactly 5, 
12 x Strong-Backed Labour
Success
Not strictly stealing
The disposition of the manor house should be a matter for the courts. But none of the claimants are around right now. […] It takes weeks to reassemble [the stones] at your lodgings, but at last there it is. A basalt gymnasium of your own.
[Find the rest of the story at https://www.fallenlondon.com]
You now have 1 x Formidable Basalt Gymnasium
Your 'Facing the Rat Army' Quality has gone!
You've lost 12 x Strong-Backed Labour
