Archaeologists say that an inner harbor built for military or trading purposes on a Sicilian island may have been a sacred pool that reflected starlight from certain constellations.

A new study suggests that the sacred pool would have been the center of a giant sanctuary that honored several deities. The pool on the island city of Motya was built after the attack by Carthage.

Lorenzo Nigro, a professor of Near Eastern and Phoenician Archaeology at Sapienza University of Rome, said in a statement that it was a sacred pool at the center of a huge religious compound.

The study was published online on Thursday (March 17) in the journal Antiquity, and it states that the site has been interpreted after 60 years of archaeological work.

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The island city of Motya sits on Sicily's western coast.

The island city of Motya sits on Sicily's western coast. (Image credit: Antiquity Publications Ltd)

An aerial view of the sacred area on Motya.

An aerial view of the sacred area on Motya. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

This map of Motya shows the sacred pool area in the southern part of the island.

This map of Motya shows the sacred pool area in the southern part of the island. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

There is a small island off the western coast of Sicily. The abundant supply of fish, salt, fresh water and its protected location within a lagoon made Bronze and Iron Age populations thrive there. Phoenicians settled there in the eighth century B.C., bringing their culture to the island.

The settlement grew into a bustling port city with a trade network stretching across the central and western Mediterranean. Carthage is a rival power with Phoenician roots on the North African coast. The Carthaginians destroyed the city of Motya in the sixth century B.C.

But he bounced back. The artificial basin, which was discovered in the 1920s, was rebuilt quickly by the population. The basin was thought to be the same as the Kothon, an artificial harbor that served as a military port at Carthage. The basin was thought to be a place to repair ships in the 1970s.

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A ledge at the mid-point of the northern side of the pool.

A ledge at the mid-point of the northern side of the pool. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

An ancient block with the carved foot of a statue that was found by the pool's edge.

An ancient block with the carved foot of a statue that was found by the pool's edge. (Image credit: © Museo Archeologico Regionale A. Salinas, Palermo; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

A drawing of what the Ba'al statue that stood in the middle of the pool might have looked like.

A drawing of what the Ba'al statue that stood in the middle of the pool might have looked like. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

The sandstone statue of a god found in the Marsala Lagoon in 1933.

The sandstone statue of a god found in the Marsala Lagoon in 1933. (Image credit: © Museo Archeologico Regionale A. Salinas, Palermo; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

Between 2002 and 2020 archaeological work was done at the basin. There are a number of clues found at the pool, which spans an area of 172 by 121 feet. The Temple of Ba&al was found at the edge of the basin. Nigro said the port would likely have harbor buildings, not a temple.

Nigro and his colleagues discovered that the basin was filled with natural freshwater springs, not connected to the sea. The remains of more temples were found around the basin, along with altars, engraved stone slabs, and special objects that people left for religious purposes.

The discovery that the pool actually collected freshwater from an underground aquifer was one of the key clues, according to Nigro.

The archaeologists found that the pool reflected important constellations. Nigro wrote that the sanctuary's spatial layout may have represented a vault. He said that there is a niche in the sanctuary that marks the position of the sixth-brightest star in the night sky, when it rises to the north during the autumn equinox. He found that a stela in the enclosure's south marked the bright star in the night sky when it rose to the south during the autumn equinox.

There are stunning summer solstice photos.

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Archaeologists filled in the pool with a replica statue of Ba'al at its center.

Archaeologists filled in the pool with a replica statue of Ba'al at its center. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

The refilled pool reflects the stars of the modern night sky.

The refilled pool reflects the stars of the modern night sky. (Image credit: Lorenzo Nigro; Antiquity Publications Ltd)

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Archaeologists filled in the pool with a replica statue of Ba'al at its center.

Archaeologists filled in the pool with a replica statue of Ba'al at its center. (Image credit: © Sapienza University of Rome Expedition to Motya; Lorenzo Nigro, Antiquity (2022); Antiquity Publications Ltd)

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The refilled pool reflects the stars of the modern night sky.

The refilled pool reflects the stars of the modern night sky. (Image credit: Lorenzo Nigro; Antiquity Publications Ltd)

The Temple of Ba'al is located in the east-southeast at the winter solstice, while the east-southwest rise of the Phoenician god of Ba'al is identified by Nigro.

During the excavation of the Temple of Ba&al, archaeologists found the bronze pointer of an astrolabe, an ancient navigation tool. The statue of a dog-headed baboon was found and was associated with the Egyptian god of astronomy and often featured in zodiacs.

The evidence shows that the basin was not an inner harbor for ships, but a sacred pool, according to an associate professor of Phoenician-Punic archaeology at the University of Sassari in Italy.

Guirguis told Live Science in an email that he was in agreement with the interpretations proposed by Nigro.

From this we should draw a precious lesson, which pushes us to safeguard the most relevant commodity that we could ever find on the planet in any era of human development, the freshwater.

The sacred pool is once again filled with this precious resource. After finishing the excavation, the team filled the basin with water and put a replica of Baal on the pool's center pedestal.

It was originally published on Live Science.