The Younger Dryas (12,900 to 11,700 years ago) was a return to glacial conditions which temporarily reversed the gradual climatic warming after the Last Glacial Maximum started receding around 20,000 years ago. It is named after the alpine-tundra wildflower Dryas octopetala, which was prevalent at the time.
So here’s the sitch; about 13,000 years ago the last ice age was winding down and the glaciers were receding. The spear hunting Wooley Mammoth business was about to go under but luckily they were allegedly able to cross the Bering Strait which was frozen at the time to North America (woot woot go America). Based on what I learned in school, those glaciers receded and made my home, Long Island, NY, thus concluding the ice age.
Due to advances in science we have found information that shows that 12,900 years ago something suddenly plunged the world back into an ice age but for only 1,200 years. WTF (why the face)
There are 2 hypotheses that the great minds are testing 1. meteor impact or meteor atmospheric explosion 2. A volcano in Germany erupted around the same time that was big enough to cause serious damage — below is a picture of what we call the YDB field (Younger Dryas Boundary) its where we have found evidence of the Younger Dryas Event.