If shamans are defined as experts in communicating with a spirit world on behalf of others, then it must be beyond doubt that they existed in ancient Europe, because every traditional society has had such experts; such a definition cannot in itself, therefore, offer the potential to say anything very interesting about ancient Europeans in particular. The slightly tighter definition, of experts who perform that communication in an altered state of consciousness, is not a lot more helpful, because it seems that most human beings who claim or are claimed to make direct contact with spirits (including deities) seem to do that in such a state, and in European history have done so under the names of sibyls, oracles, seers, prophets, visionaries, saints and mystics.