They live in Siberia near the Yenisei River. Their settlements can only be reached by a helicopter or a boat. They never get bored - during the day they go hunting and fishing and at night they perform their ethnic rituals. Their way of life has remained the same for hundreds of years. Some people call them the Siberian Indians, as they are related to some native North American groups. What does "Ket" mean and how do they manage to preserve their own language?