On the other hand, the solo traveler is a recent phenomenon largely enabled by 20th century technology and political developments.
I know there are programs which travel the world as a group, but they tend to be very ends-focused (“startup travelers”) etc.
So, the era of time when the Earth had open, undefined spaces (“smooth space” as defined by the philosopher Deleuze) seems to be basically over forever, barring an apocalyptic event. We might have to wait for new planets to see nomadic societies existing again.