Pistyll Rhaeadr, in the Berwyn Mountains, Powys, is the UK's tallest single drop waterfall.
It is made up of streams of crystal clear water falling 240ft in three stages, forming a river known as the Afon Rhaeadr.
The waterfall, which is featured in this collection of pictures, is regarded as a Site of special Scientific Interest.
It is also listed as one of the Seven Wonders of Wales.
Click on each image for more information