Rough Castle Fort is the smallest, but best-preserved fort on the Antonine Wall.
The wall – a turf fortification – was constructed around 142AD to mark and hold the northernmost reaches of their power. Approximately 39 miles long, it stretched from the River Clyde to the River Forth. But the wall was a cold and miserable posting at the end of a long supply line, and it was abandoned in 208AD.
To the north (camera right) is land that was occupied by Caledonians – the people the Romans wanted to hold back. To the south, Roman land. And between them, the wall – a pair of man-made hills with a ditch between them, exhausting anyone foolish enough to test the defences of the wall.