The cave AGGALAKI, is located in an area (POULATA), where there is a large system of caves, which are not far from each other, in a straight line, only a few hundred meters.
It has been found that most of them form in their interior underground lakes, with fresh or brackish water.
In the case of the caves HIRIDONI AND SOTIRA, it was found after cave diving, that they are connected to each other through a siphon 190 meters long !!!
In the past, (in 1963), with the help of special dyes (uranine), which were channeled from the sinks of ARGOSTOLI, it was found that after 14 days, these substances were found to flow into the area of SAMI and specifically at the locations of KARAVOMYLOU, FRYDI, AGIA EFIMIA (ANNA PETROCHEILOU ¨ IN THE CAVES OF GREECE).
other side of n is 14 kilometers in a straight line.
The waters at their exit are brackish because during their journey they join the groundwater ((runoff), which ¨does¨ down¨ AINOS.< p> It is therefore a truly admirable natural geological phenomenon that similar to this area does not exist on any other island in GREECE.
The cave AGGALAKI is located at an altitude of 50 meters, between an olive grove.
For the cave abyss AGGALAKI a study of its utilization had been made and for this reason a stone low wall with a railing has been constructed around its entrance.
Finally, the utilization study was never applied in AGGALAKI and so it remained in its peace and quiet, waiting for the speleologists to come down and admire the beautiful decoration, the lakes with the blue clear waters and to feel once again admiration and love for the beauties of KEFALONIA.
About 2 km from the village and 1 km from the cave Agalaki, pol Near the rural road that connects Poulata with Karavomylos, is the Hiridoni cave, which is part of the complex of caves in the area and which according to speleologists in the distant past was a single huge cave which over the past the form we know today.
Hiridoni has a depth of about 40 meters, length 100 meters and a downhill entrance which ends in an impressive gallery with clear brackish water and wonderful stalactites and stalagmites. In fact, after cave diving, it was found that it is connected to the neighboring Sotira cave through a 190 meter long underground pipeline.
There are rare aquatic plants in this pipeline, while it is estimated that a unique insect species that has managed to adapt to life without light. It is the grasshopper of the caves that has no wings, while its eyes have atrophied living in a dark environment.