Baculite Mesa, Pierre Shale, WIPS Field Trip: PEOPLE & GEOLOGY, 5/17/2003

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Great caution must be exercised at Baculite Mesa. Many canyon walls in the loose Pierre Shale are ready to release thousands of pounds of debris on unsuspecting visitors!
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Great caution must be exercised at Baculite Mesa. Many canyon walls in the loose Pierre Shale are ready to release thousands of pounds of debris on unsuspecting visitors!