Bertha

Bertha is a Roman fort near the River Tay in Perth and Kinross, Scotland. The site spreads across about 3.9 hectares on a glacial terrace and is marked by low earth banks and shallow ditches that outline the former defensive boundary.

The fort was built during the Flavian period in the first century AD and controlled a strategic river crossing as part of the Gask Ridge defense system. It played an important role in the Roman occupation network of the Scottish Lowlands.

The ancient structure includes remnants of barracks, rampart ovens, and courtyard buildings, discovered through excavations and geophysical surveys since 1973.

The site is visible through low earth banks and shallow ground depressions that can be explored on foot. Visit during dry weather, as the ground can become muddy after rain.

Two segments of earth banks reaching about 2.5 meters in height survive on the southern side and show how substantial the original Roman fortification was. These raised sections are rare examples of well-preserved remains of such structures in Scotland.