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The Largest Human-Made Art on Earth

Take the huge dry lake bed. Choose a stick. Make the largest sand drawing on Earth.

Next on the list could be - aliens see it, make contact. Well, even without aliens, this art is more than mind-boggling in its scale. It's planet-altering.

Jim Denevan made the world's largest freehand drawing a few weeks ago on a dry lake in Nevada. How big is it? Three mile across, which took 100 miles of walking to draw the pattern:
(via dark roasted blend)