On the Chemin des Dames, German soldiers took refuge in a former limestone quarry ... In this image by Irish landscape photographer Michael St. Maur Sheil at the site of the Battle of the Somme ...

Intermittent drainage is a good indicator of a limestone landscape. Because limestone is permeable, water is able to pass through it until it reaches impermeable rock and must re-emerge.

It is one of the most popular vacation spots in Europe for families looking for ... stretching east and a tangle of weathered, golden limestone cliffs, inlets, and sea caves to the west, it ...

Intermittent drainage is a good indicator of a limestone landscape. Because limestone is permeable, water is able to pass through it until it reaches impermeable rock and must re-emerge.