It was an age when reindeer roamed the Scottish landscape, competing for territory with human raiding parties from what is now the North Sea.
The country lay under glaciers as far south as the Highland Line, and a mini ice-age was fast approaching.
Today, for the first time, Scottish archaeologists will tell the story of this remarkable period at a national conference in Glasgow.
Alan Saville, of National Museums Scotland, will join archaeologist Tam Ward to discuss ongoing work at Howburn Farm, an ancient human campsite discovered by amateur enthusiasts in 2005. The discovery, north of Biggar, is the oldest so far found, and proves that humans lived in Scotland as long as 14,000 years ago.