Submarine tunnels
Submarine caves are among the most mysterious and lesser-known sites in Montenegro, hidden within the rocky shores of the Bay of Kotor. These man-made tunnels, carved into the cliffs, were used during the Cold War as shelters for submarines and naval vessels of the Yugoslav fleet. Today, they have become a popular attraction for boat tours, drawing visitors with their aura of secrecy and historical significance.
The main submarine bases were located on the Lustica Peninsula and near the town of Herceg Novi. The entrances to these underground structures were skillfully disguised by the natural landscape, allowing vessels to hide undetected from potential air or sea attacks. The spacious tunnels were designed to accommodate small submarines, while a network of side chambers provided maintenance facilities without the need to bring the vessels into open waters.

During the Yugoslav era, these sites were under strict military control and served exclusively strategic purposes. Following the breakup of the country, the bases were abandoned, their equipment was dismantled, and over time, the tunnels transformed into historical landmarks.
Today, the submarine caves can be visited as part of boat excursions departing from Kotor, Tivat, and Herceg Novi. Visitors can approach the massive entrances, hidden within the cliffs, while some boats even venture inside, allowing passengers to experience the eerie atmosphere of what was once a highly classified military site. The journey offers a glimpse into the past, where these now-silent tunnels once buzzed with activity as crews prepared for strategic operations.

Despite being abandoned, these underground bases remain a fascinating part of the region’s military history. They serve as a reminder of the time when the Bay of Kotor was a crucial strategic point on the Balkan map and continue to attract researchers and travelers eager to uncover the secrets of the past.
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