Limestone is a type of rock that forms from the accumulation of the remains of ancient sea creatures like shells and coral. It is often used as a building material and can be found in many different colors. Full definition
For example in the 1970 ′ s I made an advance in the theory of limestone cave formation because I am a chemist. (joannenova.com.au)
Set amongst a lush backdrop of dramatic limestone cliffs, white sands meet turquoise waters for a picture postcard setting. (adventurousfeet.com)
Beautiful surf and lake beaches, great fishing, lake cruises, wineries, galleries, fine food, nature walks, spectacular limestone caves, ocean views, golf & more. (wikiaustralia.com)