An underwater archaeological excavation was carried out near the ancient site of Asini, also an archaeological site, east of Tolo in Argolida.

According to the Ministry of Culture, the site, which is located close to the present-day village of Tolo, was inhabited both in prehistoric and historical times, thanks to its favourable location.

The archaeological excavations in 2021 and 2022 had revealed the extent and nature of a large artificial port facility east of the Kastraki site. The main structure consists of a broad artificial headland located in shallow waters. On this can be distinguished what are probably rooms and buildings in the shape of residences. These remains were recorded using photogrammetry during the 2022 excavation as they required more thorough investigation. As the settlement of Asini has been continuously settled since prehistoric times, it is difficult to ascertain when this port facility was originally constructed.

The 2024 underwater excavation focused on the seabed near the northwestern edge of the artificial headland. This particular site was chosen on the basis that the artificial headland is preserved in good condition at this point, while it appears to have retained a large part of its original shape. The area occupied by the excavation section was 16 sq.m. The excavated area was documented by photogrammetry at the points where the diversity and variety of the archaeological sites required it.

The 2024 fieldwork showed that significant remains of the stone-built port facility are preserved on the seabed. These consist of fallen material, such as stones and worked building materials. Probably the most important finds are the amphora sherds found in the stone-built structure and the broken vessel. The assemblages of these fragmentarily preserved vessels suggest that they were deposited during the use of the plateau or at the time of its abandonment and collapse. They can therefore be used as clues in the discussion about the dating of the structure.

The next step will be to carry out one or possibly two sections at the top of the plateau. The section will be excavated manually and the sediments will be removed by dredging. Any objects and building remains will be recorded in situ using photogrammetry. The results of the research will be published in the scientific journal of the Swedish Institutes of Athens and Rome, Opuscula, as well as in other scientific journals.