The Gloucestershire village of Marshfield is now an up-market dormitory for the cities of the West Country, but in the past, it was a focus of brewing. Marshfield's business was malting and fortunes were made and lost here in the production of the malt for beer-making. This Saturday, three teams of history hunters try to discover the physical remains of malting in Marshfield, how one particular family was involved in the trade and how the needs of malting shaped the surrounding agricultural landscape.