I've only watched scuba diving shows of that caldera.
The ol Neanders' were out and about even 200,000 years ago. They faded away as little as 20,000 years ago, Assimilated along with at least 5 other hominid species we are still a diversity of other hominids in our genes. For example Sherpas in Nepal have more denosovian genes and Europeans have more ancient South east asian genes. wtf?
There has been a whole lotta sex and travel goin on for some time.
Science trys to show a detailed path of mankind.
Maybe our gene pot is so stirred by now, linear trends may only be an illusion
or not.