Cool Geo-Pic: Nicholson Crater, Canada

From NASA's Earth Observatory:

Click here to view full image (4000 kb)
Some 400 million years ago, a meteor struck Earth in what is now Canada’s Northwest Territories. Plate tectonics have rearranged Earth’s continents considerably since then, and the 12.5-kilometer- (7.8-mile-) wide crater is now Nicholson Lake, one of many small lakes that dot the sub-arctic, glacier-scoured landscape.

Full story at: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17972