Some of the most interesting cultures I have come across in my studies.
The Kalashi people live in a remote area in Pakistan, and claim to be descendants of the Greek armies led by Alexander the Great. They are the only non-Muslim group in the area, are mostly fair-skinned and have customs and traditions that differ totally from that of their neighbours. They are polytheists (believe in more than one god).
The San, also known as 'Bushmen', is one of the few groups on earth who still have a Stone Age lifestyle: they are nomadic and live as hunter-gatherers, mostly in the Kalahari dessert.
Very little is known about this tribe(of only about 200 people), who live on Northern Sentinel Island (governed by India), because they are so fierce, that no-one has ever been able to get close enough to really study them. Their language differs totally from that of others in the island-group, which probably means that they have been living in seclusion for thousands of years.
This group has been living in seclusion in the magnificant caves in the forests of Laos (on the border of Vietnam)and have had hardly any contact with outsiders until only a few years ago. They worship their ancestors and different spirits, for example the spirit of the forest.
The MlaBri people are also known as Yellow Leaf people. They used to live deep in the jungles of Thailand and were rarely seen. Banana leaves were used as a roof on their shelters. When these leaves turned yellow a week or two later, they moved to a new place in the jungle to continue their hunter gatherer lifestyle.
Even in the 21st century, there are still more than a hundred different groups or tribes all over the world that have avoided contact with 'civilization'.
The newest trend is for governments to protect the rights of these groups to live in seclusion if they so wish, because contact almost always results in fatal epidemics of illnesses like measles, to which these people often do not have any resistance.
select one here...