Does thermoluminescence dating
Even within the known history of the area, the only humans to inhabit the region were nomads whose lifestyle would not leave any such structures behind.
But I was looking for activity in china about 12,000 years ago.... 12,000 years ago, it was agricultural state..150,000 years ago, it was high industry..not say any more....thanks Looking at various sites that deal with other 'pipes' in sandstone, there appears to be a natural explanation for these I am afraid...
Navajo "Pipes" Natural concretionary pipe-like features, which are quite similar to the Baigong Pipes, occur in the Navajo Sandstone and other sandstones of Southwestern United States in the form of hematite "pipes".
In a mysterious pyramid in China’s Qinghai Province near Mount Baigong are three caves filled with pipes leading to a nearby salt-water lake.
There are also pipes under the lake bed and on the shore.
The iron pipes range in size, with some smaller than a toothpick.