In Japanese mythology, Ajisukitakahikone was the chief of many thunder- spirits, and the father of Takitsuhiko, the lord of pouring rain. When he was a baby he was so noisy that his nurses carried him up and down a flight of steps to soothe him, and then put him in a boat to sail endlessly round and around Japan, and this is why the sound of thunder is heard to approach and then recede. Research Ajisukitakahikone