Siliconized Woods on General Gobi in Qitai County The Grand Gobi is located in the southern part of the Jungar Basin in Qitai County. Within a range of 3.5 square kilometers there found thousands of tree fossils dated from more than a hundred million years ago. The tree fossils are on the ground, about 1000 trees per square kilometers, of which the longest reaches over 30 meters and the largest 2 meters in diameter. The structure and growth ring of them are clearly visible. So here may be rated as a world miracle.