Coming to Middle Earth to oppose Sauron means they arrived right as Illuvatar sank Numenor beneath the oceans, and bent the (previously flat) world into a sphere. Plenty of room for geological upheaval.
Speaking of which, has anyone done a pre-Numenor version? Also, is Valinor up there somewhere, maybe as a moon? And are the sun and moon visible as an actual fruit and flower carried by the maiar?