Royal Ontario Museum
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Pompeii: In the Shadow of the VolcanoWildlife Photographer of the Year
Hands-on GalleriesEaton Gallery of Rome More Galleries
Activities at the Museum
Saturdays, Jan 9 - Mar 5,
2016 (Excludes Feb 13)ROM for the Holidays
December 26 to January 3
ROM Speaks: What Happens in Pompeii, Stays in Pompeii
Dec. 8, 7 PMROM Daytime: In the Field
Dec. 10, 11 AM
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View answer ►
A. Sandstone. This sandstone concretion is a rock that was made from sand that has been pressed together. It looks lumpy because it was probably formed inside something soft, like clay.
Is it sandstone, an Inuit marble sculpture, or a marshmallow?