No rock, these people were suppose to have been an extremely ancient race. The stories surround the culture of the native north Americans.
Extremely large humans have been found complete with shield and sword and bought up by private collectors. This wouldn't be THAT strange, but when they are found by blasting teams 100 and more feet deep, it certainly raises some questions.
They find axe heads that weigh 30, 40, 50 pounds. I'm a very large man, I'm 6'4 and weigh around 300 lbs., my hands looks like catchers mitts. I have more natural strength and power then anyone I personally know and I can tell you that I wouldn't have much use for an axe head of that weight. The best I ever heard it put went like this, " if giants aren't real, I sure wish they'd quite leaving there stuff everywhere." Simple and true.