Hi, as you know mummies are humans which are mummified in the past with special materials to save their body and it is very powerful method that knows we can find the body of mummies save their form. And they just mummified important characters like empires not typical people. And know we can study on the body of mummies and learn a lot about them. About their style of life, about their diet, about the age of death of the mummy and about how many years old is the mummy. If you want to know what kind of materials they used for mummifying this video can helps you.