Grosmont Railway opened 1818-19 from Llanvihangel to Llangua as 3ft 6in (110 cm) plateway. It was engineered by J Hodgkinson. At Monmouth Cap, the site of the end-on junction with the Hereford Railway, the tram road stables survive. The name of the location comes from the necessary tavern at the horse-changing point and commemorates the County's long-time major industry.

A circa 360m length of tramroad embankment, running WSW-ENE from SO33142110 to SO33492123, is broken by a bridgeless stream crossing where a culvert is depicted on the Ordnance Survey County Series (Monmouth. IV.13 1881). There are stone sleepers in situ. The site is recorded on RCAHMW aerial photograph 945074/49.

RCAHMW, 29 June 2011.

Source: A Guide to the Industrial Archaeology of South East Wales, AIA, 2003