The Ice Age Survival Saga

Modern man Forrest falls into a prehistoric glacier, meets a talking Saber-toothed Tiger. Using modern tech, he saves primitive Milo, forms an alliance with the Mammoth King. The group fights predators, defeats the Short-faced Bear using gunpowder and traps, and builds a fortress in Hot Spring Valley. They embark on an expedition to explore unknown continents, writing a prehistoric legend.