Relatively few Roman remains had been found at Monmouth until recently. The first ditch of the fort was discovered in 2007 by the Monmouth Archaeological Society behind properties on Monnow Street, within Monmouth town centre. Excavations in 2010 in Agincourt Square also uncovered pottery and bones, which appear to confirm the existence of a fort. There is substantial evidence of iron working dating from the Roman period, drawing on local iron ore and charcoal for smelting from local forests. This includes hearths and waste slag, both in the town centre and in the Overmonnow area. Stone buildings associated with 2nd and 3rd century iron working have been excavated near the crossing of the River Monnow. Coins found in the town date mainly from the third and fourth centuries, suggesting continuing civilian settlement.