Ancient Maps that Tell the Story of a World-Wide Global Survey in 3000 BC?

The year is 1799. The explorer Humboldt is paddling down the wild waters of the upper Orinoco. Formidable cliffs press upon him from both sides. Suddenly he glimpses, etched in the rock high above, an array of strange messages.   Humboldt asks the natives what it means. Their reply is so startling, he almost tips out […]