Those who like to go walking
in the Yorkshire Dales may wonder how a lake the size of Malham Tarn can exist alongside various sinkholes where surface water rapidly vanishes underground, but September will bring the chance to find out.
Volunteers from the national park authority will be hosting a five-mile walk around the area on September 12th that explains where the water goes after it flows out from the tarn.
The trip will help those donning their walking boots
to learn more about the geography of the area, which is based on limestone and includes features such as the water-eroded gorge of Malham Cove as well as the sinkholes where the water drops down.
Malham Tarn exists because it sits on an island of impermeable rock in the middle of the limestone, making it an unusual feature of the landscape.
However, there are other lakes and tarns in the national park, including Semer Water and a number of small moorland pools.
Posted by Brandon Egley