limestone

Malta's major resources are limestone, a favourable geographic location, and a productive labour force.

From the pinky, limestone walls of its great basilica, we see people snaking down to a small cave in the valley below

This is the pays calcaire, it's limestone country.

Most limestone and sandstone aquifers are deep and extensive but may contain groundwaters that are not being recharged.

These are generally fed by groundwater springs, and many issue from limestone massifs, such as the Atlas Mountains in Morocco.

That’s right. It’s one of the longest and deepest limestone caves not just in the country but in the world.

In about 90 percent of them, you have water from the surface, streams, waterfall, whatever, moving water that flows through cracks found in limestone.

Yes, so there’s two kinds of limestone caves.

Part of the limestone rock layers permeated by water from below, those curly lines are supposed to be cracks in the rocks.

Over time, uh, this limestone decayed and seeped into the soil and changed the soil's chemistry.

Professor: Well, Saturno believes the limestone and lime plasters that the Mayans used to build their structures...

Along with the sickle blades are many grinding stones, primarily mortars and pestles of limestone or basalt.