Housesteads Roman Fort was an auxiliary fort on Hadrian's Wall in Northumberland. This phot shows the northern granary looking westt. The pillars supported a raised floor to keep food dry and free from vermin.
The PiP shows the Latrines which were.hygienically placed at the lowest corner of the fort, supplied by a water tank at rear with original lead sealing between its slabs.


Courtesy of

en.wikipedia.org/wiki/Housesteads_Roman_Fort