The Watering Hole, Saturday, August 31, 2013: The Naked Greenland

Just when you thought you knew what your planet looked like, along comes a surprise – there’s another canyon on our planet that rivals our own Grand Canyon. It’s in Greenland, and it was discovered by scientists using ice-penetrating radar and decades of data.

The canyon has the characteristics of a winding river channel and is at least 460 miles (750 kilometers) long, making it longer than the Grand Canyon. In some places, it is as deep as 2,600 feet (800 meters), on scale with segments of the Grand Canyon. This immense feature is thought to predate the ice sheet that has covered Greenland for the last few million years.

The scientists used thousands of miles of airborne radar data, collected by NASA and researchers from the United Kingdom and Germany over several decades, to piece together the landscape lying beneath the Greenland ice sheet.

As beautiful as I’m sure it looks, my fear is that we’ll be able to see what the canyon looks like, with the naked eye, in our lifetimes. Well, not the people living on the Eastern coast.

This is our daily open thread. Feel free to discuss canyons are any other topic you wish. And if you’re currently enjoying a three-day holiday weekend, you can thank Unions for that.