I'm having a chuckle from your juxtaposition of beetles and wildfires. Recently found out that they sell plain out aussie gums trees that have had beetle attacks(rise after bushfires) into the USA "green housing" market as Australian (wormy) chestnut.

Environment flips/crashes are part of some of the models, but I've not seen too much detail on the speed of the flip/crash.

Despite what people think, the dinos were around for quite a few centuries after that big meteorite impact.

Google Maps

Fraser Colorado

Satelite image

zoom in and out

maps.google.com/maps

the dead tress you see passed away in three years and that which is green is dead too as that picture on google maps is old.

I speak through experience as I just spent seven years living in that valley.