Before the discovery of experts, most of the ancient tombs have been stolen, and now the main way for archaeologists to excavate ancient tombs is to eradicate the entire rammed soil layer of the ancient tombs, and then enter the ancient tombs.
And the tomb robber is different, the tomb robber mainly relies on digging the cave, this cave looks simple, but the doorway inside is very much, how to accurately dig into the tomb, how to ensure that the tomb does not collapse, are exquisite.
At the earliest time, experts were also very curious about this, because in a vast position, ready to hit the robbery hole into the burial chamber, which is no different from finding a needle in a haystack, for which experts studied a lot of robbery holes to find out the principle.
Before the Tang Dynasty, the gods and goddesses in the ancient books were able to smell the soil to distinguish the ancient tombs, but the specific people who had seen it could not find one, but the tomb robbers could indeed determine the general location of the ancient tomb according to the surface.
For example, there was an ancient tomb at that time, there was no snow on it, and the locals regarded it as a strange thing, but the main reason was that there was a large tomb below, the structure of the soil layer had changed, and the melting rate of snow was naturally different from other places.
Found the location of the ancient tomb, the following is to fight the robbery hole, in fact, the tomb robbers do not have a good method, is to try one by one, with the Luoyang shovel to hit the bottom, and then determine the location of the tomb, which is also based on the soil layer to judge.
If the robbery hole is round, the lack of support of the surrounding soil layer will collapse, so the tomb robbery hole is generally square, and it is convenient to hit the ladder straight up and down.
Of course, the current tomb robbers no longer use this method of soil, but directly use explosives to blow up, and when blowing up, it must be horizontally blasted, squeezing the soil layer to both sides, so that there will be no landslide.