Royal Ontario Museum
100 Queens Park
CHIHULYWildlife Photographer of the YearMore Exhibitions
Galleries of Africa: EgyptJames and Louise Temerty Galleries of the Age of DinosaursMore Galleries
Your Essential Guide to the ROM
ROM for the HolidaysSaturday Club
Register NowALL FAMILY EVENTS
ROM SpeaksNew Year's Eve at the ROM _ SOLD OUTALL ADULT EVENTS
Connect with vibrant ROM communities and access our extensive collections and curatorial expertise.
Explore the Centres
Nurture discovery and inspire wonder in your students through the power of authentic natural specimens and cultural objects!
ROM membership is the best way to explore and enjoy the extraordinary experiences of science and civilization that the Museum has to offer all year round.
Discover the benefits
Join YPC or RPC
The Board of Trustees is the governing authority for the Museum.
The Board of Governors is responsible for all philanthropic activities.
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?