Antonine Wall: Rough Castle
Rough Castle is one of the most impressive and atmospheric places to explore along the Antonine Wall, the Roman Empire’s short‑lived but ambitious frontier across central Scotland.
Amazing archeology
Strategically positioned near modern Bonnybridge, Rough Castle was defended by turf ramparts, deep ditches, and multiple gateways. The fort was subject to excavations in the early 1900s, which identified several buildings within the fort. These included:
the headquarters building
a granary
another stone building, possibly the officers' quarters
a bath-house in the annexe
A tablet found in the headquarters building recorded the erection of the building by the Sixth Cohort of Nervii. An altar to the goddess Victory was found just south of the fort in 1843.
Statement of Significance
You can find out more about Rough Castle in our series of special documents outlining the history and development of Historic Scotland sites.
Deadly defences
One of Rough Castle’s most striking features is the remarkable line of lilia pits. These are shallow, oval-shaped defensive hollows arranged in rows just north of the wall. Originally filled with sharpened stakes concealed beneath brushwood, they were intended to slow or injure attackers long before they reached the fort’s defences. Their name, “lilia,” comes from Julius Caesar’s description of similar traps in Gaul, comparing their shape to lilies. These pits are among the best examples anywhere on the Roman frontier.
Discover more on trove.scot
See archive photographs of Rough Castle, plus archaeology notes and more on trove.scot.
