Light at the end of the tunnel: sun shines for Brunel's birthday

Rail staff confirm legend that rising sun shines through Box tunnel in Bath on birthday of Isambard Kingdom Brunel

Engineers have tested one of the UK's most intriguing railway legends: that the rising sun shines through the Box tunnel near Bath on the birthday of the 19th-century genius who created the line.

For many years, railway enthusiasts and mathematicians have argued over whether Isambard Kingdom Brunel, the creator of the Great Western mainline, did design the two-mile tunnel with his own birthday in mind.