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The pedestrian and cyclist tunnels beneath the River Tyne opened in 1951. They connect Jarrow on the south side of the river with Howdon on the north. There are two parallel tunnels, one for pedestrians and one for cyclists. The tunnels are Grade II listed.

More information about the tunnels can be found on their dedicated website: Link

The River Tyne is 100 miles long and flows generally eastward towards its mouth at Tynemouth just east of Newcastle. The River has two sources. The South Tyne rises on Alston Moor and the North Tyne rises north of Kielder Water.
Wikipedia: Link

The National Cycle Network is a network of cycle routes. It was created by the charity Sustrans Link (Sustainable Transport), aided by a National Lottery grant.

Many routes aim to minimise contact with motor traffic, though 70% of them are on roads. In some cases the NCN uses pedestrian routes, disused railways, minor roads, canal towpaths, or traffic-calmed routes in towns and cities.