Hercules Second Labour Mosaic Detail

Detail from a Spanish mosaic depicting Hercules’ Twelve Labours displayed in the Museu Nacional de Arqueología of Madrid (MNA). In the photo we see Hercules slaying the Hydra of Lerna, a city south of Argos in the Peloponnese.  There is no unanimity as to how many heads the Hydra had, varying from one to countless, although only …