CALCÁRIO - LIMESTONE

http://www.flickr.com/photos/xxclaireyfaireyxx/180550888/sizes/l/

http://www.flickr.com/photos/lapstrake/1552202251/sizes/o/

http://www.flickr.com/photos/cdell/376234243/sizes/l/

http://www.flickr.com/photos/diego_sideburns/2872892735/sizes/l/