Mersey Tunnel ventilation shaft. ... which have been in continuous use since the Birkenhead tunnel opened in 1935. The noxious fumes are pumped out from a 200ft tower on the building roof.

The 80th anniversary of the opening of the Queensway tunnel is being marked. The 2.13 mile (3.4 km) tunnel linking Liverpool and Birkenhead was opened by King George V on 18 July 1934. It was the ...