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What do eyeless worms, bacon formation draperies, and soda straw stalactites all have in common? Do you know the difference between a troglobite, a trogloxene, and a troglophile? Where do you go spelunking? Find out the answers to these and other questions in the new U.S. Geological Survey (USGS) publication, Exploring Caves, a teaching packet for grades K-3.