Ancient alien S7 started with a discussion of mummification in human history even the practise until today.  The show has pointed several suspected points include it is potentially a process of human travel to another dimension require a physical body after death.  Also it may be alien inherited approach to preserve DNA for later re-clone of human body when technology allowed.

Great leaders from President Mao of China, Pop John II, Joseph Stalin, Ancient Egyptian kings, Qin Shi Huan that unified China and etc.  We recorded this note as we do believe there is a link to multi dimensions entry during after death.  However we are not sure if re-clone will be able to recall the spiritual of a human or memories back to the physical body.