In the years preceding the submersion of Mu, this tale was told to his children's children by Hespire the space-wanderer, when he had grown too old for the fatigues and rigors of ultra-mundane voyaging:
During my numerous trips to the inner and outer planets (said Hespire) I saw such marvels and met such adventures as would make the wildest legends of the world's youth appear credible by comparison. Some day, perhaps, I will tell you of my encounter with the frightful but insubstantial giants who infest the hidden side of the moon; and will also relate the curious predicament in which I found myself upon landing amid those entities, half fungous and half reptile, that flourish loathsomely beneath the humid and everlasting fogs of Roiba.