English: A knapped flint building stone made from a nodule of dark grey brown flint full of diffuse light grey inclusions. It has the appearance of a prehistoric flake core in that it has flakes struck from the 3 platforms to make a square section. One end has been removed and the remains of a pair of hard hammer bulbs of percussion are visible on the break. The remaining bulbs of percussion on the other edges appear to also be from a hard hammer and where they are obscurred is by harsh abrasion damage. One long side and the opposite end carries some cortex and some mottled blue/cream patination from an older set of flake scars with similar platform edge abrasion damage. These scars are truncated by the unpatinated ones and so are older. It appears that a flint nodule has been worked (likely for a historic period building) using an iron hammer and this material has been redressed to a smaller and more brick-like shape more recently. The Parish church of Saint Thomas, in Cricket Saint Thomas, Somerset has neat lines of very closely fitted flint 'bricks'. To quote the caption next to that image from Wikipedia(flint): 'The height of the very neatly knapped flints varies between 3 and 5 inches (7.6 and 13 cm).'