I can't accurately predict when the Prehistoric Era will end because it depends on many factors, including the author's writing progress, readers 'feedback, and the development of the plot. However, based on the author's past performance and current writing trends, I believe that the end of the Prehistoric Era will not be too long. The author is already constantly updating chapters and showing a positive writing attitude. Therefore, we can expect to see the final outcome of the Desolation Era in the next few years.