The cave is situated at an altitude of approximately 700 meters a few kilometers distance from Kandila in the Peloponnese. In 2009, members of the Hellenic Speleologic and Exploration club  had reached the depth of 153m exploring the cave. In 2015 with the help of a team of cave divers in cooperation and partnership with SPELEO club Fondas Pitsinelis explored the cave to a depth of 187 meters.

On the 1st of May 2024 Bart Pitala furthered the exploration at this cave reaching a depth of 240 meters. Making Sintzi among the deepest caves explored underwater in the world. In fact Bart had visited Sintzi in the past and planned to come back. His efforts were supported by an international team of Polish and Greek cave divers and we look forward to diving again in the near future and the making of a documentary film providing more insight into the exploration of this cave.

The cave has two exploration fronts which are two shafts leading to the deeper parts of the cave. Access to one of them is guarded by an unvanquished restriction at a depth of -95 meters, while the other is a vertical corridor, explored to a depth of -153 meters in 2009, and then to a depth of -187 meters in 2015. 

Over more than a week of activities in Sintzi, Bartek performed a series of preparatory and acclimatization dives, as well as three exploratory dives. As part of the preparations, many bailout stages were deposited, providing additional security for the Dual CCR system used (bailout CCR Liberty sidemount plus Liberty Backmount), and the guidelines in deeper parts of the cave were also organized and patched up.

In one of the dives after exploring 100 meters of the corridor protected by the restriction, it was possible to connect it at a depth of -160 meters to the other main branch which had been explored to a depth of 187 meters in 2015. 

In the deepest dive having reached the maximum planned depth of -240 meters, almost simultaneously with the planned decompression time, Bartek ended the exploration, even though the corridor still extends with a spacious cross-section. The dive was carried out according to plan practically to the minute and lasted just over 6 hours, with 7 minutes spent in the newly discovered sections.