triangle shaped craft exceeding 10000 miles an hour speedWhile travelling easterly on D117 in the Maury valley near Perpignan France a perfect triangle craft crossed at umbelivable speed North to south it was probably not above 3000 feet AGL and zip just above avoiding the mountain pics, summit to summit the valley is 2 miles wide the occurence lasted half a second, it was not humanly possible to sustain such manoeuver, approximate speed over 10000 miles an hour without sonic bang.