Funny I just posted about it... the English name is “The Ice people”: https://en.m.wikipedia.org/wiki/The_Ice_People_(Barjavel_novel) https://en.m.wikipedia.org

Funny I just posted about it... the English name is “The Ice people”: https://en.m.wikipedia.org/wiki/The_Ice_People_(Barjavel_novel) https://en.m.wikipedia.org/wiki/The_Ice_People_(Barjavel_nov... And yes a great sci-fi book, even so the civilization in question is just 900,000 years old not multi millions like the original article.