The site of a post-medieval corn mill with a horizontal water wheel. Known as Wellington Mill, it was located on the upper reach of the Groudle river, below the Bowring woollen mill, and appears on the 1868 Ordnance Survey Plan (sheet XI/13). Sketches of the mill were made by J.M. Nicholson in the early 1880s and are held by the Manx Museum. Around 1879, the Douglas Water Works Company (which already owned Groudle Mill at the river's seaward end) purchased the water rights to Wellington Mill at around the same time it completed the Clypse reservoir. According to the 1899 work "Milling in Manxland," a wheel from one of the mills in this area was later repurposed to power a "toy" mill built at Groudle, which reportedly generated electricity for lights below a hotel there.