Ancient Tombs Really Dooms Day Vaults!?

I'm sure most of you have heard of the dooms day vault? What if this isn't the first vault of it's kind? I think there is evidence of a much similar idea in our past. Lets look at the Egyptians. We are lead to believe that the great temples that contained the mummies of Pharaohs where made with the belief that they would come back to life one day. What about the tombs we have found with 100s of mummified animals? We are lead to believe they where pets or Pharaohs property that was buried with their masters. What about the grains and other items kept in sacred vases? Food for the Pharaoh once they are reborn? What if they where in fact doomsday vaults that contained seeds of the plants and DNA of the living creatures that inhabited those areas because they knew of a coming doomsday. We opened those vaults and destroyed their purpose. I think we figured this out and came up with fairy tales to calm the public. We just copied their idea once we figured it all out. My whatever god you believe in be with you. These vaults where made for a reason...