The building is a farm smithy with forge and chimney. The smithy provided implements for the farm, such as horseshoes, bolts, horseshoe nails, and carpentry nails. Iron was heated in the forge and then formed into products. There were bellows for forcing air into the forge and a water container to cool the hot objects. Gammlia’s smithy is located a bit from the other farm buildings, as was done in the past to protect from fires.