2017 Indiana Geological Survey Calendar -- Wyandotte Cave (2016)
The 2017 IGS Calendar features an 1878 hand-drawn map of Wyandotte Cave and illustrations of the various structures and formations within the cave. The 21 by 33 inch calendar is printed in full color on heavy poster paper.
2016, 2017 Indiana Geological Survey Calendar -- Wyandotte Cave: Indiana Geological Survey Calendar 2017
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Indiana Geological Survey
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