The fertile plains of the ancient Greek region of Thessaly stretch south from the shadow of Mount Olympus. Thessaly's numerous small cities were home to some of the richest men in Greece, their fabulous wealth counted in innumerable flocks and slaves. It had a strict oligarchic government and a reputation for indulgence and witchcraft, but also a dominant position between Olympus and Delphi, and a claim to some of the greatest Greek heroes, such as Achilles himself. It can be viewed as both the cradle of many aspects of Greek civilization and as a challenge to the dominant image of ancient...