Grey Mare's Tail, Conwy

The Grey Mare's Tail (Welsh: Rhaeadr y Parc Mawr) is a waterfall on the very edge of the Snowdonia National Park near Gwydir Castle in Conwy County Borough, north Wales.

However this was possibly not always the case — in 1895 Francis Frith published a postcard showing the "White Mare's Tail Cascade, Llanrwst".

[3] Despite the slightly different name ('white') and only showing a single waterfall — as opposed to today's twin cascades — it is probable from the woodland setting that this is indeed the same location.

Below the falls is a shallow plunge pool, and on leaving the wood the waters flow under the road to join eventually the River Conwy.

When Sir John Wynn was laying out the ornamental gardens at Gwydir Castle in the 1590s, he took a spur of water from above the falls, channelling it along the hillside in a leat.