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NYC Trade Center Dig Exposes Ice Age Landscape

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NYC Trade Center Dig Exposes Ice Age Landscape Crews excavating the World Trade Center site this Summer for the foundations of a new skyscraper have uncovered features carved into the bedrock by glaciers about 20,000 years ago, including a 40-foot-deep pothole. Exposing the solid rock beneath at the ground zero site in lower Manhattan is critical for supporting what will be Tower 4 of the new World Trade Center, being built by Silverstein Properties. The reminders of the power of glaciers won't be around for long. The pothole and other features are being covered, filled in or blasted away.

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