Ingleborough is the second highest of Yorkshire's Three Peaks rising to 2,371 feet.

Topped by a cap of of millstone grit, the geology of this peak is particularly interesting with its layers of limestones, shales, and sandstones.

The great scar limestone forms the main mass of Ingleborough, under which, lies the Askrigg Block - land forced up along the South Craven fault.

The surface limestone provides a good example of an upland limestone pavement.

There is also evidence of early human settlement of the area. Ingleborough hill fort is an iron-age settlement built by the Brigantes tribe.

Historians believe that it was constructed around the 1st Century to protect the tribe from the Romans.

There are stunning views from the top of Ingleborough. On a clear day visitors can see as far west to the Irish Sea and Morecambe.

Closer home there are impressive views across to Baugh and Howgill Fells, Blea Moor and Wensleydale.

The whole Ingleborough area is riddled with potholes and caves.

Gaping Ghyll is one of Britain's largest caverns, and the fall into the cavern is Britain's highest unbroken waterfall. The water flows under the earth to Ingleborough Cave and reappears in a well near Clapham.

Gaping Ghyll is not open to the public, as it is not a developed cave. But every year on the May and August bank holidays, there are so called "winch meets". At this events, everybody can become lowered down for a guided tour. The visitor sits in a kind of swing mounted at a steel cable.

The winch meets are organised by the Bradford and Craven Pothole Clubs.

Photograph courtesy of Yorkshire Tourist Board.