Watlowes Dry Valley, Mallham in the Yorkshire Dales.
This deep limestone canyon lies between Water Sinks and Malham Cove. Once the waters from Malham Tarn flowed above ground, carving out this impressive valley and creating a huge waterfall over the lip of the Cove. Now the water goes underground at Water Sinks to rise at the foot of Malham Cove and Watlowes is left as a the Dry Valley.