Looming Natural Disasters?

Suppose an advanced Earth civilization hundreds of thousands of years ago coped with the last Ice Age (the lengthy one, not the Little Ice Age) in a highly competent manner - by evacuating to another planetary refuge? Did they make it? Did they leave a message for posterity? Did they ever intend to return?

Who were left behind? Hint: the primitives (our ancestors). If you are reading this, no doubt you have the entire Web as your resource. Do some investigation and critical thinking; reach a tentaive conclusion and refine your data until you are reasonably satisfied in your answers. Then, you cannot stop, you must evaluate the impact of new information.

As Ovid said, Nil homini certum est (nothing is certain for man). Which seems fairly clear from this: Scientist Says Fault Activity Unclear earthquakes in the New Madrid Zone occur differently than those along other fault lines.
"This whole thing is a big enigma," Glen Mattioli (professor of geosciences at the J. William Fulbright College of Arts and Sciences) said. "As far as we know, the reason we get earthquakes is because of applied stress related to the motion of plates."
But Mattioli said that reason doesn't apply along the New Madrid Fault. No theory has fully explained why large earthquakes may have occurred there, either, he said.

And we thought Katrina was the epitomy of catastrophy? We know paltry little about the history of our planet beyond the past few millenia. How often in the last 2,000 years have whales been in Londons Thames? We have no real answer, although it was supposed to be the first sighting in about 100 years. Global Warming does not have credibility.