This photo shows two chimneys on the same wall.
The chimney on the left links internally to a regular fireplace.
The chimney on the right has no (apparent) link inside the house.
Both are on the wall of the same room.
i.e. it looks like the chimney on the right has been blocked off internally.
It looks like they were both built at the same time.
So what would the chimney on the right be for? The pot is a different type would that be a clue?
A neighbour thought that the room may have been a kitchen sometime in the past. Is that a clue too?
i.e. maybe some kind of ventilation flue.
And advice gratefully received.