cavern

Work to repair the road won't be completed until December at the earliest due to the difficulty of detecting caverns under the ground, though a section of pavement has reopened in recent days.

Researchers working with cave explorers uncovered the remnants of an auroch while surveying a number of caverns and sinkholes near Ingleborough.

The scientists travel 1,500 metres below the surface into three vast underground caverns.

Large underground salt caverns are ideal - but the nearest potential sites are in East Yorkshire and Cheshire.

"Instead of a big, sheer pristine box of ice, you can see caverns under the edges," Prof Meijers says.