US authorities investigate huge etching of ‘8647’ on National Mall grounds

Live webcam footage from atop the Washington Monument shows a highly visible ‘8’, while the others appears fainterUS federal authorities are investigating what appears to be a massive etching of “8647” into the grass of the National Mall. Live webcam footage from atop the Washington Monument as of Thursday afternoon shows the markings, with a highly visible “8,” along with less visible “6”, “4” and “7.”