GPS reception is very weak here, so the listed coordinate will bring to within 20m of the entrance, use the provided hint if needed to find the cache.
The Richmond Vale Railway was a 4 ft 8 1⁄2 in (1,435 mm) colliery railway line in the Hunter Region of New South Wales, Australia, servicing coal mines at Minmi, Stockrington, Pelaw Main and Richmond Main. It was over 26 km (16 mi) long and passed through three tunnels, and was the last commercially operated railway in Australia to use steam locomotives.
The line was privately owned, by the private firm of J & A Brown and its successor companies, J & A Brown and Abermain Seaham Collieries Limited (JABAS) and Coal & Allied Industries Limited. It was constructed in sections, the earliest section being from Hexham to Minmi, built by John Eales in 1856 to service his colliery at Minmi. At Hexham the railway crossed the then Hunter River Railway Company's line to Maitland (the current Main North line) and several coal loading staiths were built on the bank of the on the Hunter River to allow the loading of coal onto ships.