The Great Gods of Samothrace, Whose Names We Don't Actually Know

Around 357 BCE, on a remote island in the northern Aegean with no good harbour and a mountain that catches every storm coming off the Balkans, a Macedonian king met an orphaned princess from Epirus. Both were there to be initiated into the same mystery cult. He was young; she was a teenager with no parents and a claim to royal blood. Plutarch says he fell for her on the spot.

Plutarch is the only source who says it, writing four centuries later, and the chronology is tight enough that historians generally read the romance as decoration on what was a political marriage: Philip was already king by 359 and married Olympias in 357. Treat the love story as a good story.

What nobody disputes is the setting. Their son would be Alexander the Great, and they could have met anywhere — a wedding, a war, a diplomatic dinner. The tradition puts them at a religious initiation, on an island most Greeks would have struggled to find on a map, because that initiation was open to absolutely anyone who made the trip.

That openness is the strange part. And it's still not the strangest thing about Samothrace.

An initiation with no gate

Most Greek mystery cults gated entry somehow. Eleusis required initiates to speak Greek and not have blood on their hands, and ran on a fixed civic calendar tied to Athens. Samothrace ran on none of that. Free or enslaved, Greek or foreign, man or woman, king or nobody — the Sanctuary of the Great Gods initiated whoever arrived and asked, more or less on demand, for a modest fee.

The result shows up in the stones. Inscriptions recovered from the sanctuary record close to a thousand named visitors between roughly 180 BCE and 186 CE, arriving from Tarentum in the west to Chalcedon on the Black Sea. Kings, sailors, freedmen, entire embassies sent by cities that wanted the gods' goodwill on record. The epigraphist Nora Dimitrova has catalogued the lot.

Whatever the mysteries promised, it was popular enough to draw pilgrims across the whole Greek world for the better part of a millennium, into a place that offered no scenery, no oracle, and reportedly ferocious weather.

Two stages, and a ring to prove it

Initiation came in two steps, myesis and epopteia — roughly, "closing the eyes" and "the vision" — and unlike Eleusis, where a year had to pass between them, a pilgrim to Samothrace could complete both back to back in a single visit. Convenient, if you'd sailed a long way and didn't fancy doing it twice.

What initiates took home was a ring. Archaeologists have recovered them in numbers: plain iron, magnetised, sometimes later cased in gold once someone worked out how to make the base metal presentable. A magnetite ring doesn't do anything except hold a faint, genuine pull — which, worn on the hand of someone who has just been initiated into a cult about divine protection, is either a coincidence or exactly the point.

The largest building on the site, the Rotunda dedicated by the Ptolemaic queen Arsinoe II in the early third century BCE, is still the biggest fully enclosed round space known from Greek architecture — twenty metres across, one door, and a function even the excavators describe as unclear. A monumental building whose exact use inside a well-documented sanctuary nobody has confidently reconstructed. That is, more or less, the condition of the whole site.

Gods everyone worshipped and nobody could name

Here's the part that should be simple and isn't: who, exactly, were the Great Gods?

Herodotus says the Samothracians received their rites from the Pelasgians — a shadowy pre-Greek population he uses elsewhere as a catch-all for "people who were here before us" — and connects them to the Kabeiroi, a group of minor deities associated with fertility and protection at sea. Diodorus Siculus gives a different story: Zeus himself taught the rites to his son Iasion on Samothrace, and Cadmus of Thebes was initiated there before he married Iasion's sister, Harmonia.

Later writers pile on identifications that don't agree with each other. The Great Gods get linked to Demeter and Persephone, to Hades and Hermes, to the Dioscuri, Castor and Pollux, twins famous for protecting sailors. None of these equations is stated with real confidence by the people making them, and Roman-era sources openly admit that outsiders don't actually know.

Modern scholarship hasn't resolved this and mostly stopped trying to. Walter Burkert's standard survey of Greek mystery religion treats the ambiguity itself as the point: the Samothracian gods may never have had ordinary Greek names at all, even for their own worshippers. What the inscriptions call them is simply theoi megaloi — the Great Gods. A title, not a name.

A headless statue and a lot of names

In 1863 a French vice-consul named Charles Champoiseau began digging on the hillside above the sanctuary and, that April, uncovered the torso of a colossal marble woman with wings, dressed in wind-driven drapery, standing on what turned out to be the prow of a ship. Further campaigns over the following decades recovered more of her. She has no head and no arms to this day. She is one of the most reproduced sculptures on earth.

The Nike of Samothrace commemorated a naval victory, probably Macedonian or Hellenistic, and stood inside the sanctuary that made the mysteries possible — a public monument inside a precinct built around a secret. The two things sat next to each other for centuries: an open show of triumph, a closed room where a thousand strangers a generation went to be told something they were never allowed to repeat.

And they didn't. That is, so far as anyone can tell, the actual achievement of the place. We have Dimitrova's near-thousand names. We have Diodorus's myth and Herodotus's guess at an origin. We do not have a single ancient description, hostile or otherwise, of what an initiate actually did inside the hall.

Compare the cult that talked

A fresco at Pompeii shows, or seems to show, a Dionysiac initiation in enough visual detail that scholars have argued over its meaning for a century. Christian polemicists eventually described the Eleusinian rites in order to mock them, which is how most of what we know about Eleusis survives at all — through the mouths of its enemies.

Samothrace got neither treatment. No hostile source ever cared enough, or knew enough, to break the silence. The secrecy that a Macedonian king and an orphaned princess swore to keep in the fourth century BCE is, on current evidence, still being kept.