Spyridon Marinatos excavated two tholos tombs at the Akona site, located about 800 meters northeast of the modern village of Koukounara. The northernmost tomb had an earthen mound covering it and features a stone-built stomion (entranceway) and a burial chamber with a diameter of 6.20 meters. Inside the chamber, there is an elongated pit. Among the finds from the tomb are a chalcedony seal stone depicting a male figure jumping on a goat, and a bronze knife, both of which are now exhibited at the Pylos Archaeological Museum. Additionally, the tomb contained at least 13 human skulls and animal bones. The burials took place during the Mycenaean period, mainly in the 13th century B.C. However, there were also reburials and traces of pyres and animal sacrifices up to the end of the 8th century B.C. These included the skeletal remains of a deer, which are indicative of the fauna of the area. In addition, ceramic pots of the late Geometric period were also found in the tomb, which were deposited as offerings in ancestor worship ceremonies.