THE massive problems created for tens of thousands of people by the closure of the Forth Road Bridge show how vital our crossings are across major stretches of water.

But structures that take us under the water can also be helpful in getting people about their local areas.

This is the pedestrian section of the Finnieston Tunnel, seen here in 1955, which ran under the River Clyde.

The entrances were the North and South Rotundas. The North is near the SECC and the South close to the STV studios at Pacific Quay.

The Glasgow Harbour Tunnel, as it was officially named, was opened in 1895 and there were three tunnels in all. Carts were able to use the tunnels thanks to hydraulic lifts and in later years cars also used the tunnels.

Glasgow Times:

But in 1943 safety fears closed both tunnels and only the passenger tunnel stayed in use.

Although it appears light in this picture, that was often not the case, and there were frequent leaks from the river above.

It stayed in use until April 1980 and was later  sealed and a large water main installed by Scottish Water in 1987. That tunnel is still there, but the two others were filled in in 1986.