The trees would not have been there — the boreal forest did not exist in this form during the Last Glacial Maximum.

In their place would have been the open grassy steppe-tundra of the mammoth steppe, with views extending for miles across the flat terrain.

The mountains would have been there, but their profiles would have been different — sharper, less weathered, still actively shaped by the glacial processes that were operating in the surrounding highlands.

And in the valley below, or on the slopes of the ridge, or perhaps being driven toward the cave by a coordinated hunting effort, there might have been horses.

Large, shaggy, cold-adapted horses — a species that has been extinct in North America for more than 10,000 years — browsing the productive grasses of the mammoth steppe.