Speaking of giants, what Olaf tells us of the hollow world is that his father was 6’ 3”, and didn’t rise above their waistlines.
“Finally, the leader motioned as if to ask whether we were willing to leave our craft to go on board their ship. "What say you, my son?" asked my father. "They cannot do any more than kill us." "They seem to be kindly disposed," I replied, "although what terrible giants! They must be the select six of the kingdom's crack regiment. Just look at their great size." "We may as well go willingly as be taken by force," said my father, smiling, "for they are certainly able to capture us." Thereupon he made known, by signs, that we were ready to accompany them. Within a few minutes we were on board the ship, and half an hour later our little fishing-craft had been lifted bodily out of the water by a strange sort of hook and tackle, and set on board as a curiosity. There were several hundred people on board this, to us, mammoth ship, which we discovered was called "The Naz," meaning, as we afterward learned, "Pleasure," or to give a more proper interpretation, "Pleasure Excursion" ship. If my father and I were curiously observed by the ship's occupants, this strange race of giants offered us an equal amount of wonderment. There was not a single man aboard who would not have measured fully twelve feet in height. They all wore full beards, not particularly long, but seemingly short-cropped. They had mild and beautiful faces, exceedingly fair, with ruddy complexions. The hair and beard of some were black, others sandy, and still others yellow. The captain, as we designated the dignitary in command of the great vessel, was fully a head taller than any of his companions. The women averaged from ten to eleven feet in height. Their features were especially regular and refined, while their complexion was of a most delicate tint heightened by a healthful glow. [Footnote begin, Italic] "According to all procurable data, that spot at the era of man's appearance upon the stage was in the now lost 'Miocene continent,' which then surrounded the Arctic Pole. That in that true, original Eden some of the early generations of men attained to a stature and longevity unequaled in any countries known to postdiluvian history is by no means scientifically incredible." - Wm.F.Warren, "Paradise Found," p.284. [Footnote end, No Italic]
Both men and women seemed to possess that particular ease of manner which we deem a sign of good breeding, and, notwithstanding their huge statures, there was nothing about them suggesting awkwardness. As I was a lad in only my nineteenth year, I was doubtlessly looked upon as a true Tom Thumb. My father's six feet three did not lift the top of his head above the waist line of these people. Each one seemed to vie with the others in extending courtesies and showing kindness to us, but all laughed heartly, I remember, when they had to improvise chairs for my father and myself to sit at table.”