They were stone depots and possibly unique to Co. Waterford. They accommodated stone breakers, who manually crushed rocks into rubble to be used in the construction of the roads. All the main roads built in the county during the 19th century had these depots placed along the route with a distance of one furlong between them. Possibly a couple of hundred left, mostly on minor roads. They were phased out at the beginning of the 20th century. The R676 is probably the best example.
