He's probably right on the outlines, but the timing is a bit off. Read Mauro Biglio, Paul Wallis, Freddy Silva and Marco M. Vigato for more accurate and down to the nitty gritty details for trying to pin down the timeline.

More likelely time r. 12 000 years ago (the last time) and several times before that (but those times are harder to pinpoint and there is very little hard concrete evidence left, other than computational genetics and some geology estimations).