A 300 million-year-old fossilised forest, discovered at a Victorian steelworks, is set to open to the public for free as part of a Wales-wide open doors festival.
Located in Brymbo, Wrexham, the unique archaeological site was uncovered by accident in 2003 amid the clearing of the former steelworks which closed in 1990.
A heritage project made up of volunteers and students has since found fossils just metres away from the steelworks, dating back to Paleozoic Era, some 200 million years before the dinosaurs.
More than 20 "towering" fossilized trees have also been found with "their root networks still intact" and organisers now hope the site opening in September will help recruit more volunteers.
Nicola Eaton Sawford, chief executive of Stori Brymbo, said the group were "constantly finding things" and certain elements could not be identified because they are being found for the first time.
