That alone tells you something. Mills were once among the most consequential buildings in any rural Irish community, the point at which grain became food, and the place around which land use, water rights, and local economies quietly organised themselves for centuries.

Flour mills of the kind found across Connacht typically date from the eighteenth or nineteenth century, many of them built or expanded during the period of improving landlordism that followed the wide enclosure of agricultural land. They required a reliable water source, usually a diverted stream or mill race, along with substantial stonework to house the machinery, the millstones, and the sacks of grain and flour waiting for collection. Some were modest single-storey affairs; others grew into multi-storey complexes with associated kilns for drying grain before milling. The presence of one at Durrow suggests the area once supported enough cereal cultivation to justify the infrastructure, a reminder that the west of Ireland's agricultural past was more varied than its current landscape sometimes implies.