BLACK HILLS PARKS & FORESTS ASSOCIATION ONLINE BOOKSTORE

Geology - Rocks  Cindy Blobaum   (Williamson Publishing, 1999)  93 pages. $10.95

Featuring 50 hands-on activities to explore the earth, the reader will erode a cave; sort, smash, and scratch a rock collection; shape the backyard with a model glacier; sculpt a sandstone formation; watch acid rain eat away at a mini statue; and petrify a "bone" to "stone", and many other activities.

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Last revised: December 19, 2002