 Another archaeological find was made in 2006 by workers redeveloping the site of the former steelworks – a fossilised forest of the petrified wood of over 20 trees, dating from the Carboniferous Period.The ancient earthwork Offa's Dyke passes close to the village; a long section was formerly visible close to Brymbo Hall.In 1892, Professor Thomas McKenny Hughes carried out the first scientific excavation of Offa's Dyke near Brymbo.