[1] The eleven-arch granite-built viaduct [2] carries the Cornish Main Line railway across the steep-sided valley of the Angarrack River, a tributary of the River Hayle, between the present day stations of Camborne and Hayle.

The original viaduct at Angarrack was designed by Isambard Kingdom Brunel for the West Cornwall Railway and was "... built wholly of timber on stone footings".

The stone from the original Brunel footings was re-used to construct the sea wall on the approach to Penzance railway station.

[3] A tram-road of a few hundred yards was laid to a nearby quarry owned by Mr Gregor to provide infill for the granite viaduct.

[4] It was opened by the Great Western Railway in 1888 and its eleven granite arches each have a span of 56.5 feet (17.2 m).