Niourk is an amazing book. Because it brilliantly mele (with whom?) Prehistory sf and ecology in a simple story. It follows a child who will revolutionize his people and his land. Wul AETE has one of the first to question the harm of radioactivitée. In short Niourk is to the side Trap on Zarchass and Noo; If you like deep SF without taking you the head read Wul.