For a general description on the series please refer to the text for the 'Two Trails: 1'
Shortly after the second cache you will be passing under the Duke of Beaufort railway bridge, which was built in 1874 to carry the Ross and Monmouth Railway over the River Wye to its junction with the Monmouth, Usk and Pontypool Railway at Troy Station. It was built by Finch & Co of Chepstow, constructed wholly of cast and wrought iron, apart from the local red sandstone abutments. The line was closed in 1959 and the bridge now carries a footpath.
From here you can see the Monmouth Viaduct which was built by the Coleford, Monmouth, Usk and Pontypool Railway to carry a single line of railway track on a curve over the River Wye. Opened in 1861 it consisted of twenty semi-circular masonary arches over water meadows on the western side, with an overall length of 183 metres, two lattice girder spans each of 23 metres crossed the river and a 20 metre long two arched masonary viaduct on the eastern side. The line was originally intended to continue on to Coleford, but it terminated at Wyesham halt on the east side and was not extended to Coleford. The line was closed in 1964, with the track and river spans subsequently removed, but the approach viaducts remain, although the condition of parts of those on the western side are deteorating.
The cache is a bison placed on the left hand side of the path that goes under the eastern side of the viaduct.