8 June 2025 The Future is the Product of the Past

Poseidon Temple in Greece Larger than Previously Assumed

New excavations at Kleidi-Samikon in Greece’s Western Peloponnese show that the temple, discovered in 2022, is more monumental than previously assumed.

In 2022, a team of archaeologists from the Austrian Archaeological Institute of the Austrian Academy of Sciences and the Ephorate of Antiquities of Elis of the Greek Ministry of Culture succeeded in uncovering a building that probably was located within the famous sanctuary of Poseidon and may even be identified as a temple of the sea god and earthshaker. As described by the ancient author Strabo, it is located near the sea below the ancient fortress of Samikon.

It is a large 28-meter-long structure from the 6th century BC that was remodeled in the second half of the 4th century BC. The current discoveries provide further evidence that this temple was a cult building within the famous sanctuary of Poseidon, which was an important religious center in the region.

During the excavations in autumn 2023, more parts of the temple were uncovered. It became apparent that the dimensions are larger than the initial evaluation of the geophysical investigations had allowed to expect. What was initially interpreted as a vestibule turned out to be a second room. Overall, it is a building about 28 m long and more than 9 m wide consisting of two interior rooms, a vestibule and a rear hall or shrine.

3D model of the excavated area of the temple at Kleidi-Samikon, view from south, in the foreground the foundations of the temple front, in the middle the excavated column base. Photo: © OeAW-OeAI/Marie Kräker
3D model of the excavated area of the temple at Kleidi-Samikon, view from south, in the foreground the foundations of the temple front, in the middle the excavated column base. Photo: © OeAW-OeAI/Marie Kräker

Double Temple or Temple with Two Halls?

Birgitta Eder, archaeologist and head of the Athens branch of the Academy’s Austrian Archaeological Institute: “We are looking at an Archaic temple consisting of two main rooms. A central row of two columns, which we found in the first hall and which supported the large roof covered with tiles, belongs to this phase. We may assume that there were also such columns in the second room. In any case, the ground plan of the temple is unusual. So far we know of no comparable buildings.”

The function of the two rooms is still unclear. Perhaps it was a double temple, in which two deities were worshipped, or it is two rooms one behind the other, one of which could have served as a meeting place for the amphictyony of the cities of the Triphylian region. This was a loose association of cities on a religious-cultural basis in order to protect and administer a sanctuary.

Drone photo of the 2023 excavation at the Poseidon sanctuary of Kleidi-Samikon. Photo: © OeAW-OeAI/Marie Kräker
Drone photo of the 2023 excavation at the Poseidon sanctuary of Kleidi-Samikon. Photo: © OeAW-OeAI/Marie Kräker

Two Construction Phases Detectable

The research also shows that the temple has two construction phases. Erofili-Iris Kolia, director of the Euphoria of Elis: “In the second half of the 4th or first half of the 3rd century BC, the Archaic temple from the 6th century BC was remodelled. In the process, the old roof tiles were evenly applied as a subfloor for the new floor. They served as insulation against groundwater and to stabilise the floor. Something that still works today. In those places where tiles are missing, the ground is damp and muddy.” These dates correspond to the finds of pottery, which can be assigned to the Archaic and Late Classical to Early Hellenistic periods.

In the coming years, the team wants to find out more about the dimensions of the sanctuary. Here, the continuous cooperation with geoarchaeologists from the University of Mainz and geophysicists from the University of Kiel is of importance. The ancient author Strabo describes the Poseidon sanctuary as a “grove of wild olive trees”. Thus, the question remains exciting as to whether other temple buildings, altars, treasure houses, a processional route or treasuries for dedications are still hidden under the earth.

Cover Photo: Drone photo of the 2023 excavation at the Poseidon sanctuary of Kleidi-Samikon. Photo: ÖAW-ÖAI/Marie Kräker

Related Articles

1,800-year-old Roman remains discovered in valley of eastern Turkey

21 February 2022

21 February 2022

Roman remains dating back 1800 years have been found in a valley in eastern Turkey. Among the Roman ruins found...

Archaeologists Discover a New Pyramid from the Caral Culture, Known as South America’s Oldest Civilization

4 February 2025

4 February 2025

The team from the Caral Archaeological Zone has discovered a new pyramidal structure in the “Sector F” of the Chupacigarro...

“Last Rhodes shipwreck” of Roman period found in Turkey’s Fethiye

5 March 2022

5 March 2022

Turkish researchers, a Rhodes shipwreck from the third century A.D. was discovered in the depths of the Gulf of Fethiye...

8,000-year-old Female Figurine Discovered in Ulucak Höyük in Western Türkiye

15 August 2024

15 August 2024

One of the most prominent and oldest Neolithic sites found in what is now Turkey has yielded yet another interesting...

Washi papers discovered inside a 675-year-old Buddhist statue in Japan

3 February 2024

3 February 2024

The carved head of an ancient Buddhist statue hidden in the Myooin temple in Fukuyama, Hiroshima, Japan, has revealed pages...

The place of Puduhepa’s hometown Lawazantiya will be illuminated with Tatarlı Höyük

9 November 2021

9 November 2021

Excavations at Tatarlı Höyük (mound) are trying to reach findings that will enable the determination of the location of Lawazantiya,...

Grave Goods Show Gendered Roles for Neolithic Age

16 April 2021

16 April 2021

Grave goods, such as stone tools, have revealed that Neolithic farmers had different work-related activities for men and women. Researchers...

Family Looking for Lost Gold Earring Finds Viking Age Artifacts in Their Garden on the Island Of Jomfruland

2 October 2023

2 October 2023

A family in Norway was searching for a lost gold earring in their yard on the island of Jomfruland when...

A painted Wooden Saddle Discovered in an Ancient Tomb in Mongolia Represents Earliest Evidence of Modern Horse Riding

13 December 2023

13 December 2023

Researchers unearthed a wooden saddle framed with iron stirrups in a tomb in Urd Ulaan Uneet, popularly known as the...

Digitally Reconstructed: Roman Roads That Shaped 1,000 Years of Travel Across Medieval Britain

21 May 2025

21 May 2025

Researchers digitally reconstruct medieval England and Wales’ travel routes, revealing how Roman roads shaped post-Roman mobility over a thousand years....

A Roman Sanctuary with Inscriptions Discovered in Cova de les Dones, One of the Largest Rock Art Sites in the Iberian Peninsula

31 January 2025

31 January 2025

A team of researchers from the universities of Alicante (UA) and Zaragoza (Unizar) have discovered a Roman temple at Cova...

Rare 400-year-old Bronze Trumpets Discovered on a shipwreck in Croatia

12 July 2024

12 July 2024

Croatian underwater archaeologists have made an extraordinary discovery off the southern coast of Istria near Cape Kamenjak. They have unearthed...

After 150 years, Schliemann’s destruction in Troy was repaired

8 August 2021

8 August 2021

Heinrich Schliemann, a German businessman, excavated the ancient city of Troy in northwest Canakkale province 150 years ago. Archaeologists are...

Paleontologists Unearth Dozens of Giant Dinosaur Eggs in Fossilized Nest in Spain

15 November 2021

15 November 2021

Spain was the scene of a new paleontological discovery. Paleontologists extracted 30 Titanosaurus dinosaur eggs from a two-ton rock in...

New Research Shows Angkor Wat’s Incredible Population Density

11 May 2021

11 May 2021

Angkor Wat was the grand capital of ancient Cambodia. The population of Angkor Wat, one of the most magnificent cities...