TWO natural features of the Yorkshire Dales National Park have been ranked among the top 100 geological sites in the UK and Ireland.

Malham Cove and Gaping Gill have been included in a list compiled by the Geological Society and partner organisations to celebrate Earth Science Week 2014, which ended on Sunday.

The 70-metre high Malham Cove has won a place in the top 10 landscape features while Gaping Gill, the huge pothole below Ingleborough that could house St Paul’s Cathedral, was listed among the 10 best in the ‘adventurous’ category.

Robert White, the park's historic environment officer, said: “It is good to see that two of the classic limestone features of the Yorkshire Dales have been have been recognised by the Geological Society.”

Malham Cove was formed mainly by an ice stream trapped beneath an ice sheet, the rock face plucked out by ice slowly descending a natural cliff which had originally been created by a series of major earthquakes which created the North Craven Fault over 300 million years ago.

Gaping Gill is the most famous of all the Yorkshire Dales potholes. The small stream of Fell Beck drains off the slopes of Ingleborough and falls as a waterfall some 98m into a massive chamber below. The water then disappears, only to eventually emerge by Ingleborough Cave.

Access to Gaping Gill is normally restricted to experienced cavers but the Bradford Pothole Club and the Craven Pothole Club each stage a week-long event every year at which members of the public can be lowered into it.

Full details of the Geological Society’s list can be seen atgeolsoc.org.uk/100geosites. There is also an interactive map of the final list at apps.esriuk.com/app/GreatGeosites/3/wmt/view/5e0d44970b3a4b4dafb7da0404b2d8ed/index.html