Crosthwaite Corn Mill with Adjoining Store, Kiln, Stable and Mill Race

Crosthwaite Corn Mill, along with its adjoining store, kiln, stable, and mill race, is a historic corn mill first mentioned in the 13th century. The current building dates from the 18th century, with later additions and alterations. The earlier work features small, coursed rubble, mainly slate, while later work uses coursed, squared limestone rubble, with dressed quoins throughout. The mill race trough is made of large limestone slabs secured with iron clamps. The roofs are mostly graduated slate, with the mill and kiln roofs being pyramidal; the kiln roof has raised slates on each pitch that serve as vents. The stable and outshut on the north side of the store have corrugated asbestos roofs.

The mill is square in plan, standing three storeys high with two bays. The four-bay store on the east side was originally two storeys but had its roof raised and a third storey added, likely in the early 19th century. The present two-storey, two-bay kiln replaced a narrower, taller building on the same site. The three-bay stable on the west side was also originally two storeys, but the first floor was removed in the mid-20th century. The mill features plank doors and casement windows, some of which are small-paned, with some openings blocked. Water enters and exits the mill through semicircular openings on the west end of the north and south walls. The stable has a central segment-headed cart door flanked by windows.

Inside, the main mill machinery, last used in the late 1960s, remains intact. It includes four stones, one dated 1860, which could be driven by a high breast wheel with metal floats, along with an additional stone driven by a petrol engine. The extensive ancillary machinery consists of a sack hoist, two stone cranes, and an oatmeal riddle. The main roof is supported by a crown post, which has carpenter's marks. The lower storey of the kiln building contains two furnaces, originally peat-fired, separated by a barrel-vaulted passage. One drying floor has been concreted over, while the other retains its original floor with perforated clay tiles laid on iron bars.