When Dionysus grew up, he discovered the culture of the vine and the mode of extracting its precious juice, being the first to do so; but Hera struck him with madness, and drove him forth a wanderer through various parts of the earth. In Phrygia the goddess Cybele, better known to the Greeks as Rhea, cured him and taught him her religious rites, and he set out on a progress through Asia teaching the people the cultivation of the vine. The most famous part of his wanderings is his expedition to India, which is said to have lasted several years.