Colored regions appear when civilizations are active on timeline
Technology Origins
Fire
Stone Tools
Agriculture
Language/Symbols
Writing Systems
Astronomy
Megalithic Building
Seafaring
Metallurgy
Pottery
Sky Beings / Ancient Astronaut
All Sky Being Sites
Carvings & artwork depicting aerial craft, suited figures, or 'gods from the sky'
Amazon Revelations
LiDAR Discoveries
Cities for millions hidden under canopy — terra preta, geoglyphs, causeways
12,800 BCE
The Younger Dryas Impact
A cataclysm strikes. Fragments of a disintegrating comet slam into the North American ice sheet, triggering continent-wide wildfires and plunging Earth back into a sudden ice age.