||This article needs additional citations for verification. (December 2011)
The Rhiw Valley Light Railway is located near to the village of Berriew in Powys, Wales.
The railway is constructed to 15 in (381 mm) gauge, in an 'out and back' return loop 1,265 metres (0.786 mi). As an 'out and back' loop, trains return to the central station facing in the opposite direction from that in which they departed. The railway was privately built and operated, and its original owner is now deceased. The railway is now owned by his widow, who opens the line to the public just one day per year, in mid-summer. The very attractive route runs through fields and along hedgerows, and being largely unfenced there is considerable interaction with livestock from rabbits to sheep.
There are two resident steam locomotives. 'Powys' is a powerful 0-6-2 tank engine, built in 1973 by Severn Lamb. 'Jack' is a large 0-4-0 tender engine, constructed by TMA Engineering of Birmingham and Jack Woodroffe of Welshpool in 2003. An assortment of wooden passenger carriages (both bogie carriages and four-wheel vehicles) and wagons is available on the line.