I saw something on a program on NatGeo a few months ago regarding these skulls. I’m endlessly amazed that so many in the research community can’t grasp that people have been going wherever they wanted to go ever since they figured out that wood floats and can be piloted with oars, never mind that exploration and trading is probably hard-wired in all humans from day one.
Interestingly, Caribs and other tribes in the Americas tied boards to the skulls of babies to elongate them, which they considered a mark of the upper class.
They are easily mistaken for Japanese ~ by Japanese, and Japanese are frequently mistaken for El Salvadoran by El Salvadorans.
Apparently people have been getting on boats over in japan and getting caught in Pacific storms that drag them up to Alaska and down the West Coast of the Americas ~
They land. They survive. They're still there.
One of the major landing sites is in Costa Rica ~ recent graves found there are remarkably similar to the sort of thing you can find the old timers in Japan doing (circa 1200 give or take a few hundred years either side).