NYC Trade Center dig exposes Ice Age landscape - Yahoo! News

NYC Trade Center dig exposes Ice Age landscape - Yahoo! News: "NYC Trade Center dig exposes Ice Age landscape 1 hour, 12 minutes ago

NEW YORK - 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."