Open Veils · Answer
What is the Younger Dryas Impact Hypothesis?
The Younger Dryas Impact Hypothesis proposes that a fragmenting comet or asteroid struck the Laurentide Ice Sheet around 12,900 years ago, triggering catastrophic cooling, megafaunal extinction, and the collapse of the Clovis culture. Randall Carlson and Graham Hancock have brought this research to mass audiences, arguing it represents a suppressed civilizational reset. The hypothesis remains bitterly contested but refuses to die — its proponents argue that critics systematically misrepresent the primary evidence, a charge formalized in a 2026 ScienceOpen rebuttal to Holliday et al.
Evidence
- Randall Carlson has extensively documented the corroborating geomorphological record: the Channeled Scablands of Washington State, Carolina Bays, and the oriented lakes of the Arctic, which he argues represent a coherent impact-and-meltwater-flood signature.
- Graham Hancock, in 'Magicians of the Gods' and the Netflix series 'Ancient Apocalypse,' synthesizes this with the evidence for a pre-12,900 BP advanced civilization, arguing the impact erased it from the historical record.
- Martin Sweatman and the Comet Research Group have extended the framework, correlating the Göbekli Tepe vulture stone pillar carvings with a sky-map recording the Taurid meteor stream encounter that may have delivered the impactor.
- Paul LaViolette's galactic superwave hypothesis offers a complementary cosmic trigger.
- James Kennett, still active, co-authored a June 2026 University of Maine multidisciplinary study of Greenland ice-margin sequences continuing to investigate the cosmic impact connection.