The 8,800-Year-Old Man Found 1,000 Feet Inside A Colorado Cave — And The DNA Test That Linked Him To A Native American Founder Lineage
The specific mix of plants and animals in any given location in the early Holocene was not the same as the modern mix.
At an elevation of roughly 10,700 feet — the elevation of Hourglass Cave — the landscape in the early Holocene would have been broadly similar to the modern alpine and subalpine environment: rocky terrain, sparse vegetation, cold nights even in summer, brief growing seasons, and the specific combination of high solar radiation and low atmospheric density that characterizes high-altitude environments.
Large patches of snow would have remained into summer in many north-facing slopes and sheltered basins.
The animal communities of the high country were somewhat different from the modern fauna.