Nomadic hunter-gather and pastoral societies live in extremely low population densities and range across large territories where they camp, rather than staying in any one place year-round.
While some communities are still nomadic, there are many remote and isolated communities in the less populated parts of the world that are separated from each other by hundreds or thousands kilometres of "uninhabited" wilderness, but these regions are still used for trapping, berry picking, mushroom hunting and so on, and are of spiritual significance to the settled descendants of formerly nomadic people.
These places are tiny islands, the driest part of large deserts, very high mountains, and ice caps.
[2] The Sahara, the world's largest non-icecap desert, is not uninhabited and even remote areas like In Guezzam Province, Algeria, have a population of tens of thousands.
Even the hot and salty dried lake beds have Bedouin communities within them that graze their animals in the salt marshes and at nearby oases, for example the below-sea level Qattara Depression contains the tiny village of Qara Oasis and cannot be said to be truly uninhabited.
Northeast Greenland National Park, which is the world's largest terrestrial protected area, has had a census population of 0 for many years since the only mine in the region closed.