Poisoned Man

The Herrocky Mountain Ridge was so extensive that no one was able to tell how big it actually was.

Firstly, in the Purple Moon era, some of the most precious gifts from the old civilization had somehow lost its functions, including but not limited to satellites and the ability to launch one into the sky, the devastating firearms, the world wide web, and so on.

If some of the precious inventions could have remained, the old civilization would not have been wiped out overnight and the people of Purple Moon era would not have gone through a declination period. Ultimately, human beings would not have reverted to the primitive way of living.

Secondly, in the Purple Moon era, control over this world had been taken away from the hands of humans by all types of unimaginable vicious beasts.