The site of a post medieval weir. The Ordnance Survey First edition mapping of 1869 shows a weir at this location. The weir pooled water in the Laxey River, allowing it to be led off along a 300m race to a mill which began life in textile use (spinning) before being converted for paper-making and ultimately extended and converted into a power station serving the Manx Electric Railway. It is now used as a workshop.