My non-magic fantasy world has a species of hominid that lives in a huge and wide sierra of mountains. If they had split off from the (now dominant) human species a couple million years ago, (say around 3 times as far back as H. neanderthalensis) what characteristics may they have developed in that time frame and environment?
The environment is:
low plant life
isolated from other hominids
How would this species evolve to these environmental characteristics in this time frame?
They would be as smart as humans and about the same size. They would live in large groups like humans too. They’d be social and able to develop tools, fire, language, and agriculture (in small amounts)