Hidden among the rocky landscapes near Soltaniyeh in Iran’s Zanjan Province is one of the country’s most unusual archaeological sites. Known as Dash Kasan, this rock-cut complex contains monumental dragon reliefs, cave-like iwans, Islamic architectural decoration, a large stone pool, and a spatial arrangement that may preserve traces of a much older sacred landscape.
The most striking features are two enormous dragons carved directly into the rock. Their distinctly East Asian appearance seems, at first, almost out of place in northwestern Iran.
Yet the dragons make more sense when Dash Kasan is viewed within the extraordinary cultural world of the Ilkhanid period, when Mongol rulers governed Iran while maintaining connections with the wider Mongol world and Yuan China.
But that explains only part of the mystery.
Some features of Dash Kasan have led researchers to ask whether the site itself may predate the Mongol carvings—and whether successive religious traditions transformed an already sacred place rather than creating one from nothing.
Watch: The Mystery of Dash Kasan
Why are Chinese-style dragons carved into the mountains of Iran? This documentary explores Dash Kasan, the Mongols, shamanic beliefs, Buddhism, Mithraic interpretations and the site’s mysterious architectural history.
Where Is Dash Kasan?
Dash Kasan is located near the village of Viar, approximately 15 kilometres from the famous Dome of Soltaniyeh.
Its location is significant.
In the early fourteenth century, Soltaniyeh became the capital of the Ilkhanids, the Mongol dynasty that ruled much of Iran and surrounding territories. Öljaitü transformed Soltaniyeh into an important political and architectural centre and commissioned its monumental domed mausoleum between 1302 and 1312.
Only a short distance away, however, Dash Kasan presents an entirely different type of architecture.
Instead of monumental brick construction, it is carved into the natural rock.
And instead of displaying a purely Iranian or Islamic visual language, its surviving decoration brings together elements associated with Iranian, Islamic, Mongol and East Asian artistic traditions.
How Did Chinese-Style Dragons Appear in Iran?
By the late thirteenth century, the enormous Mongol Empire had fragmented into several major political realms, including the Yuan dynasty in China and the Ilkhanate in Iran.
Despite political divisions, cultural and artistic connections continued across the Mongol world.
This helps explain why motifs associated with China could appear in Ilkhanid Iran. Similar dragon imagery is also known from Takht-e Soleyman, where dragons occur in tile decoration associated with the Ilkhanid court.
At Dash Kasan, however, the effect is much more dramatic: the dragons are monumental reliefs carved directly into the rock.
Their form has been connected with Chinese visual traditions, and the dragon and vegetal motifs at the site have also been linked to the presence of Chinese and Tibetan craftsmen during the Mongol phase of the complex.
The Dragon as Guardian, Not Monster
The meaning of the dragon is particularly interesting because Iranian and Mongol traditions could interpret the creature very differently.
In the Iranian heroic tradition represented by the Shahnameh, dragons frequently appear as dangerous creatures to be defeated. Killing the dragon becomes part of the hero’s demonstration of courage and legitimacy.
Within Mongolian and Central Asian traditions, however, dragon-like or serpentine beings could have very different associations.
They could be connected with water, rain, clouds, wind and the forces of nature. Within a shamanic worldview, such a creature could occupy an intermediary position between earth and sky.
The dragon, therefore, did not necessarily represent an enemy of order. Under certain interpretations, it could become its guardian.
This contrast makes the dragons at Dash Kasan particularly intriguing.
They are not shown being attacked by heroes. They do not belong to a narrative battle scene.
Instead, they occupy the architecture itself.
The dragon at Dash Kasan can therefore be read as a guardian figure embedded within the sacred landscape, although the precise meaning of the carvings remains open to interpretation.
The Architecture of Dash Kasan
The mystery of Dash Kasan extends beyond its dragons.
The complex consists of a principal rock-cut area and a large courtyard. Within the courtyard are the remains of a large stone pool, which can still collect water in spring from melting snow and rainfall.
The principal area contains three cave-like iwans. Carved mihrabs survive near the eastern and western iwans, while other architectural decoration includes stone muqarnas, arabesques, floral and vegetal motifs, and a relief depicting a pear tree.
Perhaps most intriguing is the overall organisation of the complex.
Dash Kasan has a four-way, or cruciform, plan, with spaces arranged according to the four cardinal directions.
Taken together, three elements stand out:
rock-cut architecture + water + cruciform spatial organisation.
None of these features alone proves an earlier religious function. But together they have encouraged researchers to investigate whether Dash Kasan may contain a ritual layer older than its Ilkhanid decoration.
Elevation of the main courtyard at Dash Kasan, showing the central iwan, eastern and western iwans, and the rock-cut façades with their carved decoration.
Could Dash Kasan Be Older Than the Mongols?
This is where the history becomes considerably more uncertain—and more interesting.
Parts of the stonework have been attributed by some researchers to earlier periods based on carving techniques and markings in the rock. An old cemetery around the complex also suggests that the landscape held religious or ritual significance during different periods.
Comparisons have also been made with other Iranian rock-cut or cruciform sacred spaces.
The Stone Mosque of Darab, for example, has a four-way plan and a central square pool and has been interpreted as a structure whose function changed over time.
Another comparison is the rock-cut complex at Varjuy near Maragheh, which has been associated in various sources with the cult of Mithra.
These comparisons do not establish that Dash Kasan was a Mithraic sanctuary. They do, however, demonstrate that combinations of rock-cut architecture, water and four-directional spatial organisation have precedents in Iranian ritual architecture.
Dash Kasan and the Mystery of Mithra
The possibility of an older sacred layer has led to another controversial interpretation: a possible connection with Mithra, one of the oldest figures in Iranian religious tradition.
Stone, caves and water all acquire particular significance in later Mithraic traditions.
In traditions best known from the Roman world, Mithras is famously represented as emerging from rock, while Mithraic sanctuaries were frequently subterranean or designed to evoke the atmosphere of a cave. Water also appears within traditions surrounding Mithra.
These parallels make Dash Kasan intriguing, but they should not be treated as proof that the site was originally a Mithraic temple.
Another unusual clue comes from nearby Viar.
A damaged stone face, possibly once associated with the Dash Kasan complex, preserves wide-open eyes, a frontal composition and a headband or crown containing vegetal decoration, including a lotus and what may be a fig leaf.
Some researchers have interpreted these features through a Mithraic lens and suggested that the ritual history of Dash Kasan could predate the Ilkhanids. More speculative interpretations have pushed the earliest phase considerably further back, potentially even toward the Achaemenid period.
These remain interpretations rather than established conclusions.
Was Dash Kasan a Buddhist Sanctuary?
The Mongol phase presents another possibility.
The form and dimensions of Dash Kasan appear to have been altered and expanded during the Mongol period, and much of its surviving carved decoration is generally associated with this phase.
One interpretation proposes that the complex functioned for a period as a Buddhist monastery or sanctuary.
This possibility fits the wider religious environment of the Mongol world, in which Buddhism, Christianity, Islam, shamanic traditions and other systems of belief could coexist and compete.
As the religion of the Ilkhanid rulers changed, the site appears to have changed as well. Islamic elements—including mihrabs and muqarnas—became part of its architecture.
A Monument Built in Layers
Perhaps the most useful way to understand Dash Kasan is not to search for a single identity.
Was it a Buddhist sanctuary?
A place associated with Mongol shamanic practices?
An Islamic religious complex?
Or does it preserve traces of a sacred landscape that existed before all of them?
The surviving evidence does not provide a definitive answer.
Instead, Dash Kasan may represent a layered sacred landscape—one in which ancient Iranian traditions, possible traces of Mithraic beliefs, Mongol and Buddhist imagery, shamanic ideas and later Islamic architectural elements accumulated over time.
That ambiguity is precisely what makes Dash Kasan remarkable.
Its dragons are not simply exotic decorations imported from China. They belong to a much larger story of cultural exchange across the Mongol world—and to a site whose history may have begun long before they were carved into its stone.