The southern boundary of Breadalbane is defined by the HighlandBoundary Fault, a major SW-NE trending dislocation which runs from Achill Island on the west coast of Ireland to Stonehaven, south of Aberdeen. Movements on the fault have occurred in historic times and in the 19th century a series of movements on the fault, or minor associated faults, resulted in the construction of a building to house one of the world's first permanent earthquake recording instruments (seismometer) at Comrie. You can still see a working seismometer through the window of the Eartquake House.
