[DieHard the Hunter]

WOW. This is mind-blowing stuff, and entirely plausible. Amazing carvings, ay — particularly for something 13,000 years old!

This is straight out of the days of Conan the Barbarian, in the Hyperborean Age.

[Eternal_Bear]

Know, oh prince, that between the years when the oceans drank Atlantis and the gleaming cities, and the years of the rise of the Sons of Aryas, there was an Age undreamed of, when shining kingdoms lay spread across the world like blue mantles beneath the stars - Nemedia, Ophir, Brythunia, Hyberborea, Zamora with its dark-haired women and towers of spider-haunted mystery, Zingara with its chivalry, Koth that bordered on the pastoral lands of Shem, Stygia with its shadow-guarded tombs, Hyrkania whose riders wore steel and silk and gold. But the proudest kingdom of the world was Aquilonia, reigning supreme in the dreaming west

[ApplegateRanch]

WAY before that! Conan had excellent steel in his yataghan blade.

[gleeaikin]

If even part of the 13,000 ya dating is correct, this could have been before the comet extinction of north american development. That would explain a large gap between this and the next finds of civilization. Does anyone know what dating methodology they used?