Chogha Zanbil

Chogha Zanbil is an ancient Elamite archaeological complex located in Iran's Khuzestan province.

It is famous for its massive ziggurat, which is a stepped pyramidal monument. While most ziggurats are found in Mesopotamia, this is one of the few remaining examples outside that region. The site covers a vast area of 96 hectares. In 1979, it became the first Iranian site to be listed as a UNESCO World Heritage site. Today, it is considered the best-preserved example of a stepped pyramidal monument in the world.

The city was originally named Dur Untash, which translates to "town of Untash." It was built around 1250 BC by the Elamite king Untash-Napirisha.

The king likely intended the city to serve as a major religious center. Some scholars believe he wanted to unite the gods of the Elamite highlands and lowlands at one site. Because of its heavy focus on religion, it is unlikely that many people lived there. Instead, the population was probably mostly made up of priests and servants.

The complex was organized using three concentric walls that created distinct zones. The outermost wall featured seven gates, though archaeologists have only found two. Between the outer and middle walls, there was a shared temple for the gods Napirisha and Inshushinak. The middle area contained eleven temples dedicated to various other deities. These included gods such as Nabu, Adad, Inanna, and Humban.

Brick inscriptions have even identified up to twenty-two different temples at the site.

The heart of the complex was a 2.5-hectare innermost area. This central zone was dominated by the great ziggurat. The ziggurat was built in two distinct phases. First, builders constructed the structure up to the second level, including two temples. Later, they expanded it to its full height of five levels. The ziggurat was originally crowned with a temple at the very top. The corners of the structure were carefully oriented to the cardinal points.

Construction relied heavily on mud bricks, which formed the core of the buildings. To protect the structure, builders used a facing of baked bricks. Many of these bricks featured cuneiform characters. These inscriptions recorded the names of various deities in both Elamite and Akkadian languages. Every 11th level of bricks in the ziggurat was inscribed. Large gates were built into the four sides of the tower. One specific gate in the southwest allowed access all the way to the fifth level.

At the gates, researchers found half-life-sized statues, including one made of blue-glazed terracotta.

Archaeologists have worked hard to uncover the secrets of Chogha Zanbil. A geologist first discovered the site while performing oil exploration. He found an inscribed brick that mentioned a builder named "Untash-Gal." Roland de Mecquenem conducted early excavations between 1935 and 1946. Later, Roman Ghirshman led a major project from 1951 to 1962. His team used up to 125 workers to remove nearly 100,000 cubic yards of debris. They discovered royal palaces and a funerary palace containing five subterranean tombs. One undisturbed tomb contained an adult female between the ages of 40 and 60.

The city's long history ended when the Neo-Assyrian ruler Ashurbanipal destroyed it around 645 BC.

Although the ziggurat is now less than half its original height, it remains an incredible historical treasure. However, the site faces modern challenges. Increased global demand for petroleum means that seismic tests and oil exploration occur nearby. These activities can threaten the ancient foundations of this important Elamite monument.