Marble is best known for what it can be made into — incredible artworks or tacky ashtrays. But before it was that prized white-grey rock, marble was something a lot more pedestrian — limestone. For ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This object is part of the Education ...

Rock is a solid mass of minerals that have joined together over time. Geology is the study of how the Earth is formed and the things that happen to the Earth. As part of this, geologists study rocks ...

When you come across a rock face out of doors it is often difficult to tell what you are looking at. An immediate source of help is to access the excellent maps available on the website of the ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...