[7][8][9][10][11] The River Dyfi rises in the small lake Creiglyn Dyfi at about 1,900 feet (580 m) above sea level, below Aran Fawddwy,[12] flowing south to Dinas Mawddwy and Cemmaes Road (Welsh: Glantwymyn), then south west past Machynlleth to Cardigan Bay (Welsh: Bae Ceredigion) at Aberdyfi.

The river is prone to flooding and some roads in the lower catchment can become impassable during very wet weather.

In March 2021, Natural Resources Wales (NRW) granted Montgomeryshire Wildlife Trust a licence to release a family of beavers into an enclosure within the Dyfi Wildlife Centre (Cors Dyfi), the first officially licensed release of beavers in Wales.

There is a small population of beavers already living wild within the Dyfi catchment whose origins are unclear.

The segment of the film is where Robert Plant comes ashore on a boat, after which he rides a horse, making his way to Raglan Castle.