Thought I'd introduce some and re-introduce others to a great little museum in Rapid City, S. Dakota: The South Dakota School of Mines Museum of Geology. I love little museums like this. The displays are put together by faculty and students, mostly, and thus are innovative in their simplicity of materials and design and purpose. Admission is free, and there is a little museum store where you can buy shirts and other museum store fare. I'll let the photos do the rest of the talking: