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 and Water Survey
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The Indiana Geological and Water Survey will refund the purchase price and sales tax of products if returned with the original sales receipt within 10 days of receipt of order. Refunds will be issued with the same method of payment as indicated on the original receipt except for cash purchases, which will be refunded by check. Items must be returned in the same condition as purchased. Refunds on digital products and services are not allowed, except for defective media such as CD-ROMs, flash drives, and so on. The customer is responsible for paying shipping costs to return items.