The "field" between the railway and the industrial units originally were for cattle, in connection with the old cattle market between Prussia and Aughrim Streets, now built on as Drunalee road, etc. Cattle would be held there in connection with train transfers at the then named station of Liffey Junction.
So it is likely that it is owned by CIE. Certainly it is prime land for redevelopement. I'd love a piece of that!
