dream about ancient cave civilization in russia

Had a dream about a lost civilization discovered in Russia somewhere as archeologists were everywhere digging.

The place had symbols of bats, birds and has some connection with a lost tribe. It was a huge cavern with tunnels.

Google Denisova Cave in Russia where they just found DNA for new type of ancient humanoid. Only DNA sample came from the finger tip of a young female. These Denisovans DNA has been found in populations around the world.

I had the weirdest feeling when I first heard this story that I knew whos fingertip it was and how they lost it. My ancestors came from that area maybe it was inherent knowledge.