Colaeus (Greek: Κωλαίος) was an ancient explorer, who according to Herodotus (Hdt. Greek (el ελληνική γλώσσα or simply el ελληνικά — "Hellenic" is an Indo-European language, spoken today by 15-22 million people mainly Herodotus of Halicarnassus ( Greek: Hēródotos Halikarnāsseús) was a Greek Historian who lived in the 5th century BC ( 484 BC&ndash 4. 152) was the first Greek to arrive at Tartessos. Tartessos (also Tartessus) was a harbor city and its surrounding culture on the south coast of the He was richly endowed by the city's king Arganthonios and returned him to Greece. Arganthonios ( Argantonio in Spanish) was the most important king of ancient Tartessos (in Andalusia, southern Spain)