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Topographic map of Greenland from bedrock elevation data

Ever wondered what Greenland would look like if we could strip away all its ice? Thanks to modern radar technology and years of scientific research, we now have an incredible view of what's really down there.
Topographic map of Greenland from bedrock elevation data

This 3D visualization isn't just a pretty picture - it's a window into Earth's past. Scientists discovered something amazing when they mapped Greenland's bedrock: a massive impact crater hiding under the ice near the Hiawatha Glacier. At 31 kilometers wide, it's one of the largest impact craters on Earth. Think about it - a massive meteorite possibly just a few million years ago slammed into Greenland!

The bedrock data also revealed something unexpected - a huge canyon running straight through the middle of Greenland. At 750 kilometers long, it's longer than the Grand Canyon and was carved by ancient rivers long before the ice sheet formed. While it stretches further than its Arizona cousin, the Greenland canyon reaches depths of up to 800 meters (2,600 feet) - still impressive, though not as deep as the Grand Canyon's maximum depth of 1,857 meters (6,093 feet).

But that's not all - the data shows that Greenland's bedrock is actually bowl-shaped, with mountains around the edges forming a natural rim. This shape has helped keep Greenland's ice sheet stable for millions of years. Without these mountain walls, the ice might have disappeared long ago.

What's really interesting is how scientists gathered this data. They used ice-penetrating radar mounted on aircraft, flying thousands of miles back and forth across Greenland to build this detailed picture. It's like giving Earth an X-ray!

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