Since I'm Indian my dad used to tell this story when we would drive back from Las Vegas from vacation.

Anyways there used to be this railroad in Colorado a long time ago and there was an indian tribe and back then the indians didn't know what railroads were or trains. So one day this lone indian trailed off from his tribe becuz he heard a faint rumbling sound so he walked further and he saw a metal line (a railroad track) and the rumbling was getting louder so he put his head down on the track and it got really loud then the train came and wiped his head off clean.

And they say if you go up to the mountain where the railroad used to be you will see a headless Indian in the mountains looking for his head.