Let's not forget the destruction due to Climate Change that was also taking place out west, in the period 20,000-14,000 years ago.
Nevada suffered greatly from Climate Change, also.
That sucker had a max depth of about 900' in the Carson Sink, and was was about 500' deep at the Black Rock Desert around 12-13,000 years ago...Burning Man would have had to find a different location.
Strangest thing, though; it wasn't Man that did any of this; it was just the ending of the last glacial, which we are STILL pulling out of, which included such catastrophic events as ice-dams giving way, and lakes overflowing with melt water cutting new drainage gorges, as well as just plain drying up.
If Stephen Saunders, former deputy assistant secretary of the Interior Department, doesn't know these facts, then he didn't deserve his job; if he does know them, then it's still a damn good thing he is "former".
