On many ancient maps the words "here be dragons" were printed to indicate dangerous and/or unexplored areas. Or?
But. Maybe there is only one known historical example. http://www.maphist.nl/extra/herebedragons.html and http://en.wikipedia.org/wiki/Lenox_Globe
And it was not even "Here be dragons" - but the latin HC SVNT DRACONES ("hic sunt dracones").
And still we belive that it was a common phrase on maps. How many more historical facts are just myths?
Should we trust history? Who writes history? Where does our common knowledge come from?