A local term for what is termed an intraformational conglomerate (a rock mostly made from pebbles which have been eroded from near the area they are deposited). These are distinctive rocks common within the Old Red Sandstone. They were formed by flash floods ripping up partially solidified mud banks in seasonal rivers and depositing them downstream. Pebbles of calcrete are also very common clasts in the deposits. Mostly such carbonate-rich rocks were exploited for agricultural lime burning but in some places, such as Bromyard, are also used for very rough rubble building stone or drystone walling.