Shipwrecks of The Great Salt Lake 

@Carl's Brother vikings of course.all pseudo history and indoctrination aside the artifacts and runes abound

@Egon Pax the original discoverers would be the natives in the absence of a native population.alot of the problem is most original cities are under the ocean now since the great deluge buy people claim all the land based stuff as theirs and totally avoid exploring the oceans and upsetting the out of africa narrative which has been debunked for awhile