There are no troglodytes in Greek myth, much less troglodytes who “came down from the sky.” There are only a couple of mentions of troglodytes in ancient literature, and they are from history, not myth. (Not that Tsoukalos knows the difference.) The Troglodytes are the (human) inhabitants of Troglodytis, a city, in Flavius Josephus (Antiquities 1.15.1) and are otherwise people who live along the Red Sea coast.The term originates as trogodytes, whose exact meaning is unknown, but probably reflected a Greek attempt to transliterate the name of a people of the Red Sea coast such as the Tuareg. This was later altered by the Greeks to troglodytes based on a folk etymology from trogle, or cave. Hence, cave men. The word was used in ancient times to refer to the peoples of the Red Sea. Only much later did it become a catch-all term for ugly, little cave-dwelling monsters.