Pillars of Clay Leftover from the last Ice Age that remain uneroded due to the rocks sitting on top. Eventually th…… https://t.co/ybuHX5QRFl

Pillars of Clay Leftover from the last Ice Age that remain uneroded due to the rocks sitting on top. Eventually th… https://t.co/6WXhBHkQUX http://pic.twitter.com/sTBWcGqGOa

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October 02, 2017 at 12:01AM
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