Donggutuo-shaped cores 东谷坨定型石核
Taking early ruins of the old Stone Age in Donggutuo as axis and taking 10-25 km as radius, we can confirm the action range of Nihewan ape-man.
以东谷坨旧石器早期遗址群为轴点，以10 - 25公里为半径，可以确定泥河湾古人类活动的范围。
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