A series of majestic emerald arcs sweeps a glowing loop over the Bristol horizon and lights up one of the West's most iconic landmarks in this stunning photograph taken with one of the longest-ever exposures.

The haunting picture shows each phase of the sun over Clifton Suspension Bridge taken over a six-month period, plotting the sun's daily course as it rises and falls over Brunel's famous structure, which spans the 702ft Avon Gorge.

Incredibly, the eerie image was captured on a basic pinhole camera made from an empty drinks can with a 0.25mm aperture and a single sheet of photographic paper.

Famous pinhole photographer Justin Quinnell strapped the camera to a telephone pole overlooking the Gorge, where it was left between December 19, 2007 and June 21, 2008 – the winter and summer solstices.

His final photograph, called 'Solargraph', shows six months of the sun's luminescent trails and its subtle change of course caused by the earth's movement in orbit.

The lowest arc shows the first day of exposure on the winter solstice, while the top curves were captured in the middle of summer.

Its dotted lines of light are the result of overcast days when the sun struggled to penetrate the cloud.

Mr Quinnell, from Falmouth, said the photograph took on a personal resonance after his father passed away on April 13 – halfway through the exposure. He says the picture allows him to pinpoint the exact location of the sun in the sky at the moment his father passed away.