Ringfort (Rath), Corroy, Co. Mayo
Co. Mayo |
Ringforts
In the pasture at Corroy, Co. Mayo, a piece of early Irish settlement has effectively vanished.
The site is classified as a possible rath, a type of ringfort that would once have consisted of an earthen bank enclosing a roughly circular area of domestic or agricultural use. Raths were the most common form of rural settlement in early medieval Ireland, and thousands survive across the country in various states of preservation. This one does not survive at all. There is no visible trace of it at ground level.
What makes the absence quietly interesting is the paper trail left behind. The 1838 Ordnance Survey six-inch map recorded the site as a large oval embanked enclosure, substantial enough to be clearly mapped. By the time the 1930 edition was produced, the picture had already changed: the enclosure was shown as penannular, meaning the bank formed most of a circle but was broken rather than continuous, with a large gap at the east-southeast. The bank itself measured roughly fifty metres north to south and forty-five metres east to west. An east-west field boundary was already cutting across the outer edge of the bank at the south, and at some point after that the whole structure was levelled into the pasture. The two maps together trace a process of gradual agricultural erasure that played out across more than a century.