This short promotional video describes the new Guidebook 22: "Guide to the Serpent Impact Structure, South-Central Ohio", by Dr. Keith Milam, published by the ODNR Division of Geological Survey. Guidebook 22 is a useful tool for anyone interested in exploring the site of an ancient asteroid or comet impact about 300 million years ago in what is now south-central Ohio.
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This short promotional video describes the new Guidebook 22: "Guide to the Serpent Impact Structure, South-Central Ohio", by Dr. Keith Milam, published by the ODNR Division of Geological Survey. Guidebook 22 is a useful tool for anyone interested in exploring the site of an ancient asteroid or comet impact about 300 million years ago in what is now south-central Ohio.
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