Dinosaur Eggs, Meteorites, Signs of an Ancient Civilization: What are these Giant Balls?0
- Ancient Archeology, Earth Mysteries, From Around the Web
- January 12, 2017
Found 30 metres underground at a coal mine, they are dubbed Jurassic pearls or the marbles of a Siberian colossus. The ten spheres are around half the size of a human, a metre or so in diameter, and almost perfectly round and smooth. To add to the mystery, they change color after rain. What are they?
