 The line then continued through the other side of the valley through the 400 ft Brymbo Tunnel, up a second worked incline to Brymbo Steelworks.The western portal of the Summerhill Tunnel is still visible as of 2008, although its eastern portal and both portals of the Brymbo tunnel have been buried.In 1862 the GWR Ffrwd Branch from the Croesnewydd Junction was opened to transport railway traffic over a much more 'normal' terrain between the Chester line and Brymbo, replacing the Brymbo half of the Wheatsheaf Branch.