Swirling sand evokes a desert landscape.

Does the sand all pile up in the same way?

Sediment cores offer clues to the many histories of the Bay.

Compare how gravel, sand, and fine silt settle out of swirling waters.

Get your hands into magnetic sand.

Air—not water—erupts through fine powder to sculpt these roiling streams.

Swirling water sculpts elaborate patterns of underwater dunes.

The timing of the eruptions of these geysers depends on water temperature and pressure.

A collection of remarkable geological artifacts that invite and inspire us to see rocks in new ways.