Do you not consider the possibility that it was provided by these space fairing Co-Magmen from 11,000 years ago who were traveling to Mars and were building megalithic structures all over the place while at the same time able to fly around in aerocrafts?
FYI- It's "space-faring", not "space-fairing". Also, it's "Cro-Magnon", not "Co-Magmen".
And if you were actually just a *little* familiar with this subject, specifically the alternative theories for an ancient, advanced civilization, it really wouldn't seem so outlandish to you. But then again, it is rather well-known that you and the rest of modern academia really aren't allowed to think for yourselves. Hence, why you have to resort to years and years worth of anonymously being rude and condescending to others discussing alternative history on a website **specifically devoted** to alternative history...
Post Edited (22-Feb-13 00:28)