Was a K2 Civilization On Earth Before Us? | Unveiled
What level of life did Earth host before us??
Unveiled, Kardashev, Kardashev Scale, Kardashev Type 2, Kardashev Civilization, K2 Civilization, Type 2 Civilization, Pre-Human Civilization, Pre-Human, Before Humans, Ancient Civilization, Advanced Civilization, Life on Earth, Life Before Humans, History of Earth, What If, What Would Happen, What If Scenario, Space, Science, Documentary, Science Videos, Space Videos, Science Documentary, Science Documentary,