The Mysterious story of Al kahf (Ar raqim)

In this book there is a discussion of a mysterious cave called Alkahaf Ar Raqim. Whose mention is in the Holy Quran and it is historical, because the government and other scientists have discovered this which has been found to be true, this incident is strange because this incident is mentioned in the Holy Quran that they were some young men who Had gone to the cave and slept for 309 years, a very surprising incident. Read this and let me know if you want to add any other topic, Thanks,