Nendrum Monastery mill, Medieval tide mill at Nendrum Monastery on Mahee Island, Northern Ireland.
The horizontal waterwheel mill utilizes tidal power from Strangford Lough, featuring millstones measuring 830 millimeters in diameter for grain processing.
Archaeological excavations revealed that the mill, constructed in 787 AD, represents the earliest documented tide-powered grinding facility in the archaeological record.
The mill demonstrates the technical knowledge of medieval Irish monks who combined religious practices with industrial advancement to support their monastic community.
Visitors can examine the restored foundations of the mill structure during guided tours that explain the mechanics of ancient tidal power generation.
The mill's engineering system generated approximately seven-eighths horsepower at peak operation through its innovative use of tidal energy resources.
GPS coordinates: 54.50000,-5.64700
Latest update: June 3, 2025 10:05
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