For millennia, Tartessos existed in the twilight zone between myth, literature, and reality. Mentioned in the Hebrew Bible as the immensely wealthy silver port of Tarshish and linked by classical Greek historians like Herodotus to the legendary, long-lived king Arganthonios and his boundless riches of gold, copper, and silver, this civilization completely vanished from the historical record around the 6th century BCE. A series of massive, ongoing excavations in the Guadalquivir and Guadiana vall