When the Persian king Shapur I captured a Roman emperor alive — a humiliation Rome never forgot — he did not trust the moment to memory. He had it cut into the limestone walls of a gorge, larger than life, so that no one could ever say it had not happened. Seventeen centuries later the stone is cracking, and the victory he made permanent is slowly dissolving back into the cliff it was carved from.
"And we, with our own hands, took Valerian Caesar prisoner — and the rest, the commanders of that army, the senators and officers; and we led them away into Persis."
Shapur I, the Res Gestae Divi Saporis (his great trilingual inscription, c. 262 CE) — the boast that built this city
The Shapur River runs out of the Zagros through a limestone gorge in Fars called Tang-e Chogan (تنگ چوگان) — the "polo gorge," named for the game the Sasanian kings are said to have played on its flat valley floor. But people do not come for the polo. They come for what is carved on the cliffs on either side of the water: six monumental rock reliefs, among the largest and most crowded the ancient world ever produced, declaring the triumphs of the kings who founded and built the Sasanian Empire.
The greatest of them belongs to Shapur I, the second Sasanian king, and it commemorates the event that made him legendary across two empires. In 260 CE, at the Battle of Edessa, Shapur defeated the Romans and took their emperor, Valerian, alive — the only time in history a Roman emperor was captured by a foreign enemy. The relief lays the whole drama out in stone: Shapur towering on horseback, the dead emperor Gordian beneath the hooves, the emperor Philip kneeling in surrender, and Valerian himself held fast by the king's own hand. Three Roman emperors, defeated, dead or begging, in a single carved scene.
Just across from the gorge stood his reward to himself: Bishapur (بیشاپور, "Shapur's city"), a great Sasanian capital of perhaps fifty to eighty thousand people, with a palace, a sunken temple to the water-goddess Anahita, and ceremonial halls. And high in a cave above the valley stands a colossal seven-metre statue of Shapur, carved from a single limestone column — the king made permanent in three dimensions as well as two. Everything here is one man's argument that he, and his victory, would last forever.
The reliefs line both banks of the Shapur River in the gorge; the ruined city of Bishapur sits just across from the gorge mouth, and the cave with Shapur's statue is high in the cliffs above — a steep climb from the valley floor.
The reliefs are spread along both banks, four on one side and two on the other, carved across four centuries by several kings. Three of them are over thirty square metres, crowded with more than thirty figures each — a scale of stone propaganda almost unmatched in Sasanian art. These are the ones to find.
The largest and most crowded relief: Shapur enthroned in victory, the dead Gordian under his horse, Philip kneeling, Valerian gripped by the hand. The single image that announced Persia's defeat of Rome to the world.
Three emperors, one sceneOne relief lays out rows of soldiers, horses and tribute in ordered registers — a narrative march of conquest borrowed, strikingly, from the visual language of Rome's own Trajan's Column.
Rome's style, turned against RomeSeveral reliefs show a king receiving the ring of sovereignty directly from the hand of Ahura Mazda, the supreme Zoroastrian god — a claim that the throne was granted by heaven itself, not merely seized.
Power blessed by the divineHigh in the cliff above the gorge, a roughly seven-metre statue of Shapur — carved not from a hauled block but from a single stalagmite the cave grew itself, in the same style as the reliefs below. It toppled (by the Arab conquest, by tradition; by an earthquake, by recent analysis) and lay broken for centuries, until it was raised again in 1957.
Fallen, then stood back upThe deeper you look at Shapur's monument to beating Rome, the stranger it becomes — because Rome is all over it. The victory is Persian; much of the hand that made it permanent was not.
By long tradition, the captured Roman army — the same prisoners taken with Valerian — was put to work raising Shapur's new city across the valley. Bishapur's plan is a Roman grid, not the Persian circle of his father's capital at Firuzabad; its halls show Roman technique; and one of the great reliefs borrows its marching rows of soldiers straight from Trajan's Column in Rome. Even the floors were Roman — mosaics of banqueters, musicians, and garlanded women, the finest of them now in the Louvre and in Tehran. To celebrate crushing an empire, Shapur used that empire's own engineers, its own city plan, and its own artistic language.
It is the same Valerian, captured at the same battle, whose prisoners are said to have built the great weir at Shushtar a few hundred kilometres away. In one place the defeated Romans built a machine to tame a river; in this one, they helped carve the monument to their own defeat. A conqueror so total he could press the conquered into composing his victory song — and so dependent on them that, without the people he had beaten, he could not have built the proof that he had won.
The gorge was not filled in a single reign. It accumulated, king by king, as the Sasanians kept returning to the same cliffs to add their own chapter.
Rome could not deny what these cliffs show. Its own coins and chroniclers admit it: Valerian, an emperor of Rome, was taken alive and never came home. So Rome changed the ending instead. To a Christian writer like Lactantius, hostile to Persia, Valerian became a martyr to his own sins — kept as a living footstool that Shapur trod on to mount his horse, and at last flayed, his skin dyed red and hung in a Persian temple as a trophy.
Almost none of it is likely true. Lactantius was composing propaganda of his own, decades later and a thousand miles away; no Persian source knows the story, and the reliefs themselves show a Valerian who is captured but whole, kneeling or standing before the king. What survives is not one humiliation but two boasts about it — the victor's, cut into a mountain, and the loser's, written to make a defeat mean something. The relief was carved so the capture could never be denied. It worked. The most Rome could manage was to tell the story its own way.
For all its weight of history, Tang-e Chogan is, first, a beautiful river gorge. The Shapur River keeps the valley floor green and fertile, a ribbon of trees and reed beds running between pale, sheer limestone walls — a cool, watered corridor through the dry Zagros. It is an easy and lovely place simply to walk, the reliefs appearing one by one along the banks as you go.
The cliffs above are classic southern Zagros limestone, riddled with caves — one of which holds Shapur's fallen colossus. The wider region around Kazerun is greener than its reputation suggests: nicknamed the "green city," it is known for its wetlands, its forests, and the famous purple-and-white flower plains that bloom nearby in season. The gorge gathers all of it — water, stone, green, and the carved ghosts of kings — into one short, walkable valley.
Untamed Iran rates each destination on two dimensions — Adventure, the demands a place makes on your body, and Legacy, the weight it carries in history, drama and meaning. The gorge is mostly an easy riverside walk, with one genuinely steep climb to the cave. Its real force is in the second column: the carved record of the day Persia humbled Rome, set in a landscape slowly erasing it.
Stand below the great relief and the ambition of it reaches you before the detail does. A man had this cut into a cliff so that two thousand years of strangers would have no choice but to know what he had done — that he, a Persian king, had taken a Roman emperor alive and held him by the hand. It worked. You are standing here, knowing it, exactly as he intended. Across seventeen centuries, the boast has reached you.
And then you notice the damage. The edges are softening, weathered by rain and river and the long patience of the limestone giving itself back to the slope. One relief was smashed by a treasure-hunter within living memory and has had to be pieced together. The faces that were meant to outlast everything are blurring, feature by feature, into the rock. The mountain that was chosen because it would not change is changing anyway, slowly, indifferent to whose victory it carries.
That is the quiet, double-edged thing you take away from Tang-e Chogan. It is at once the most successful claim to permanence imaginable — a message that genuinely crossed two thousand years and still lands — and a long, patient lesson in the limits of stone. Shapur asked the mountain to make him eternal. The mountain is keeping him for now, and letting him go by inches. You leave having met both the king's certainty and time's slow, soft-spoken answer to it.
A king who captured a Roman emperor cut the moment into a mountain so it could never be denied — and seventeen centuries on it still lands, even as the cliff, indifferent to whose glory it holds, quietly takes it back.
Before my trip to Tang-e Chogan, I knew that several Latin books by Roman writers had referred to Shapur’s victories over the Romans, and that Christians had used those victories in the service of Christian propaganda. It probably began with Lactantius’ account in Chapter 5 of De Mortibus Persecutorum:
“Shapur, the king of Persia, who had taken Valerian captive, whenever he wished to climb into his carriage or mount his horse, would order the Roman emperor to bend down and present his back. Then, placing his foot on Valerian’s back, he would say, with mocking laughter: ‘This is the truth — not what the Romans paint on their walls and panels.’”
The same chapter went further still: at his death, the body was flayed, the skin stuffed with straw and hung in a temple as a trophy.
Because of the powerful image hidden inside it — and because it presented the grim fate of a man who had persecuted Christians and had therefore fallen under the wrath and vengeance of God — this story was repeated and promoted so widely that one could almost say no devout Christian over the next 1,600 years had not heard it. In history books, in schoolbooks, in churches, and almost anywhere else you can imagine.
I was standing in front of the great relief at Tang-e Chogan. I lit my cigarette and looked closely.
There was no humiliation.
No footstool. No flayed skin, no straw, no trophy nailed up in a temple.
Valerian stood before Shapur — beaten, but a man.
I took a drag from my cigarette and thought to myself: here too, as at Naqsh-e Rostam, the people’s story had defeated the story of the stone.
So what was the point of carving stones at all?
I took another drag and answered myself:
Well — if these stones had not been here, after 1,700 years of absolute propaganda, how would you have known what the truth was?
The best window. The gorge is green and the river full, the Kazerun plains bloom, and the temperature is kind for both the riverside reliefs and the steep climb to the cave. Come now if you can.
The fine second choice: mild, clear, and quieter, with comfortable conditions for walking the gorge and climbing to the statue. Lower water, but easy and pleasant going.
Hot in this part of Fars, and the cave climb becomes punishing by midday. The shaded, watered gorge floor stays bearable, but save any ascent for early morning.
Cool and quiet, and walkable on clear days. Rain can make the rock and the cave trail slippery, so pick your day and watch your footing on the climb.
🌅 Time the reliefs for low, raking light — early morning or late afternoon. Carvings this weathered all but vanish under a flat midday sun, but come alive when a low sun throws the remaining lines and figures into shadow and relief.
The gorge is gentle; the cave is not — and both reward knowing the story before you arrive, or the reliefs are just weathered marks on a cliff. The detail is folded away below; open what you need.
The reliefs and Bishapur are an easy half-day; add the cave statue and it becomes a full one. Everything runs through Kazerun.
Six Sasanian rock reliefs. The greatest is Shapur I's triumph over Rome — the king enthroned, the dead emperor Gordian under his horse, the emperor Philip kneeling, and the emperor Valerian held by the king's hand. Three Roman emperors in one scene. Others show investitures granted by Ahura Mazda and files of captives.
Yes — Valerian, taken alive at the Battle of Edessa in 260 CE, the only reigning Roman emperor ever captured by a foreign enemy. He died in Persian captivity, and Shapur cut the moment into the gorge so it could never be denied.
Shapur's city ('Bishapur'), founded ~266 CE across from the gorge — by tradition built partly by the captured Roman army, with a Roman grid plan, an Anahita temple, and ceremonial halls. The victor used the vanquished to build the proof of his victory.
Yes, with a steep climb. The ~7 m statue of Shapur was carved from a single stalagmite the cave grew itself; it fell — by the Arab conquest, by tradition, or an earthquake, by recent analysis — and was raised again in 1957. Around an hour up, hot and exposed, but the most extraordinary object on site.
Spring or autumn, for green and mild climbing weather. Nearest city is Kazerun (~23 km); reach it by car from Kazerun or Shiraz (~2 hours). Time the reliefs for low, raking light.
Inscribed in 2018 within the Sasanian Archaeological Landscape of Fars, a group of sites (with Firuzabad and Sarvestan) documenting the empire's foundation and art. The reliefs are among the largest the Sasanians produced.
Tang-e Chogan sits in the Sasanian heartland of Fars, and it completes a story the collection tells in three monuments. Down the same UNESCO landscape lies Firuzabad, where Shapur's father Ardashir drew the world's first circular city and founded the dynasty — the father imposing his order on the plain, the son carving his glory into the cliff. Far to the southwest stand the Shushtar waterworks, built by the very same captured Romans who appear, kneeling, on these walls — defeated soldiers who in one place tamed a river and in another carved their own defeat. And the province's giants are close: Persepolis, the royal tombs of Naqsh-e Rostam, and Cyrus's first capital at Pasargadae — the deeper layers of the same long Persian habit of writing power into stone. It is a gesture with a deep ancestor far to the north: almost eight centuries earlier, Darius had carved his own victory into the cliff at Bisotun and insisted, in the inscription beside it, that it was no lie.
The history here is well documented, but some of the most dramatic details — who built what, and why the colossus fell — are debated. This article gives the established account and flags the open questions.
Facts last reviewed June 2026. Established: Shapur I captured the emperor Valerian alive in 260 CE; six Sasanian reliefs line Tang-e Chogan; Bishapur was Shapur's city; a ~7 m statue of the king, carved from a single stalagmite, stands in a cave above the valley; the site joined UNESCO's Sasanian Landscape of Fars in 2018. Hedged: the emperor Gordian's death (battle or murder) is debated and the relief conflates three separate Roman defeats into one scene; the tradition that Roman prisoners built Bishapur and Shushtar is long-held but not documented in detail; the statue's height is given as ~6.7–7 m and its founding of the city as ~266 CE; whether the colossus fell to the Arab conquest or an earthquake is unresolved. Conservation: the reliefs are fragile and actively eroding — one was smashed by a treasure-hunter in recent decades — so keep off them entirely.