The trail of evidence at first seemed negligible. An extremely ancient stone "boat" dated at about 30,000 years ago was found stranded 1500 feet above sea level on the coast of Maine.
               "No one seriously thought it could have been intended to be a boat," commented chief archaeologist Gabriel Jaworski. "The stone was far too thick ... about eighteen inches even at its thinnest points. Yet, carved into it were what could only have been seats. And strangely, the rock does not resemble anything local."
               It was a total enigma, until traces of a trail were uncovered, suggesting it had been dragged inland from the nearby sea. But even more baffling was the extent of this trail. It continued into the ocean bed - even the sea floor as it had existed at that remote time.
               Enigma it remained, until a Spanish archaeology student, Raoul Pili, noticed a link. A boat-shaped indent had been carved, during the same Pleistocene epoch, into the local rock. As in Maine, a similar tell-tale trail led into the sea. Some rapid trans-Atlantic correspondence ensued. Raoul Pili, likewise, was perplexed by the trail's apparent continuation into the sea bed.
               "These Neanderthals," Jaworski deduced, must have had amazing prescience regarding what water travel was to entail. They just never got to the next step- flotation."
               A joint Spanish-US undersea survey gradually uncovered the trail. This Neanderthal "boat", in an incredible feat of strength and endurance, had been pushed, not pulled (they had not developed rope) across the Atlantic floor to America.
               Raoul Pili: "How they could not grasp flotation, yet still had a sense of global geography ... boggles the mind."
               Lacking the most elementary concepts of mathematics or even of counting, Pili explained, these Neanderthals failed to apply any kind of timing to their needs for breathing or measurements regarding subsurface pressures. Simply stated, they could not realize when they had run out of breath nor gauge pressures that would otherwise have crushed them. Consequently, they were able to endure the entire trans-Atlantic undersea mission.
               Neither Pili nor Jaworski offered any conjecture as to why this discovery has remained unchallenged by the rest of the scientific community.
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