It turns out that there is excellent evidence that the bronze age catastrophe was a massive one. Incorporating a pole shift, wherein the longstanding positions of the poles were altered. The South Pole from the Southern Indian Ocean. The North Pole from close to the area of the American “Great Lakes”. A spot just North of Wisconsin.
I had initially thought of the Quaternary extinction as the larger event. It surely was from the point of view of technological regression, and the scattering of a once connected human coastal civilisation. But from a sheer physical trauma perspective the bronze age cataclysm seems to have been the most stupendous disaster of its kind in the last many tens of thousands of years. This is, after-all, the disaster which created the new planet Venus.