Open Veils · Answer
How far south in the US did the ice sheet cover?
The official boundary undersells the strangeness of what the ice left behind. The Laurentide sheet buried regions now densely populated — Boston, New York, Chicago, St. Louis — under up to two miles of ice, and its terminal moraine literally built Long Island and Cape Cod. The collapse of this sheet, according to Randall Carlson and the Comet Research Group, was catastrophically rapid and driven by extraterrestrial impact, not gradual warming.
Evidence
- Graham Hancock and Randall Carlson have both emphasised that this boundary is not merely a geological curiosity but a civilisational horizon.
- Carlson's work, corroborated by the Comet Research Group including researchers like James Kennett and Allen West, argues the ice did not retreat gradually.
- Handcock and Carlson both note that human footprints found in New Mexico dated to 21,000–23,000 years ago — south of the ice margin — confirm populations were present and witnessing this entire glacial cycle, a fact that complicates every orthodox model of Paleoamerican migration and settlement timing.
- Everything north of that line — including vast tracts of what is now the American Midwest — was under ice up to 3 kilometres thick as recently as 20,000 years ago at the Last Glacial Maximum.
- The Younger Dryas Boundary layer — rich in nanodiamonds, shocked quartz, and iridium — points to a cosmic impact event around 12,900 years ago that destabilised the ice sheet catastrophically, unleashing the Channeled Scablands floods documented by J Harlen Bretz and later validated by mainstream geology.