The UnXplained S04E07 - Mysterious Tombs

Throughout history humans have buried their dead--in caves or chambers, in pyramids or in some form of a tomb--but why? Ancient tombs were visual memorials for the dead. In China, a vast necropolis was constructed as a way to connect to the afterlife. Is there an inherit need for us to dig up our past? What is it that we are searching for? And what profound secrets might remain hidden in tombs? That is what we will try to find out.