NewsgalleryAnchor Exchange BT tunnelsAnchor Exchange BT tunnelsBookmarkShareNewsByDanielle Hicks12:37, 30 DEC 2013Updated12:23, 15 DEC 2014The old coloured floor in the BT Tunnels underneath Birmingham.1 of 21The BT Tunnels underneath Birmingham.2 of 21The BT Tunnels underneath Birmingham.3 of 21The BT Tunnels underneath Birmingham.4 of 21One of the shafts dropping down to 40ft in the BT Tunnels underneath Birmingham.5 of 21One of the many rooms in the BT Tunnels underneath Birmingham.6 of 21One of the shafts dropping down to 40ft in the BT Tunnels underneath Birmingham.7 of 21One of the staircases in the BT Tunnels underneath Birmingham.8 of 21Reinforced walls in the BT Tunnels underneath Birmingham.9 of 21The BT Tower in Birmingham.10 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)11 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)12 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)13 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)14 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)15 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)16 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)17 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)18 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)19 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)20 of 21The Anchor tunnel and exchange from 1953-1960. (Image: Courtesy BT Archives)21 of 21