Box Tunnel
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Box Tunnel passes through Box Hill on the Great Western Main Line (GWML) between Bath and Chippenham. The 1.83-mile (2.95 km) tunnel was the world's longest railway tunnel when it was completed in 1841.
A winter view of the western portal
The west portal
An engineering drawing of the longitudinal cross-section of Box Tunnel
The sun rises in near alignment to the entrance to Box Tunnel, Bath, UK on 9 April 2017
Great Western Main Line
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The Great Western Main Line (GWML) is a main line railway in England that runs westwards from London Paddington to Bristol Temple Meads. It connects to other main lines such as those from Reading to Penzance and Swindon to Swansea. The GWML is presently a part of the national rail system managed by Network Rail while the majority of passenger services upon it are provided by the current Great Western Railway franchise.
Maidenhead Railway Bridge carrying the line over the River Thames.
St James Railway Bridge, Bath
Image: Bathpool GWR 158763+158747 Cardiff service
Image: Oxford GWR 165116 leaving for Reading