Military Naval Tunnel Parja Vis – Hidden Shelter for Warships

Military Naval Tunnel Parja is one of the most striking abandoned military structures on the island of Vis. It is hidden in the rock at the end of Parja Cove, right next to Rogačić, and its large concrete entrance opens directly to the sea. From the outside, only an opening in the hill and a short dock are visible, while behind it lies a long underwater tunnel where military vessels could once take shelter.

Unlike the fortifications and artillery positions that dominate the peaks of the Vis hills, Parja showcases a different aspect of the island's military past – structures built to conceal ships, crew, and equipment within the island itself.

The tunnel is often referred to as Parja Subterranean Tunnel, and it may also be known as Lobster. Today, it is one of the most interesting stops on military tours of Vis, but it can also be accessed separately during visits to Rogačić and Parja.

Why did Vis have such a tunnel?

The location of Vis in the open Adriatic has given it significant military importance for decades.

After World War II, the island became one of the most important military areas of the former Yugoslavia. Access to Vis was long restricted for foreigners, and barracks, artillery positions, radar facilities, storage areas, underground passages, and other military infrastructure were built across the island.

Parja was ideal for a naval shelter. The cove is narrow, deeply recessed, and well-protected, and the rock along the sea allowed for the construction of a large tunnel whose entrance is difficult to spot from a wider area.

A vessel could enter directly from the sea and remain hidden from external view.

Is this a submarine tunnel?

Parja is often advertised as a “submarine tunnel”, but this term should be used with caution.

Official information from the Tourist Board of the City of Vis states that the tunnel served as a shelter for a torpedo boat, while the Tourist Board of Split-Dalmatia County describes it more broadly as a shelter for military vessels.

Therefore, it is more accurate to refer to it as a military naval tunnel or underground shelter for war vessels, rather than claiming its primary purpose was to accommodate submarines.

This may seem like a minor distinction, but it is significant for Vis. Stories about its military structures often become more dramatic over time than what local sources confirm.

How large is the Parja tunnel?

Only when standing in front of the entrance does one realize the size of the structure.

The tunnel is approximately 100 meters long and about 10 meters wide. The underwater channel extends deep into the rock, with concrete edges and passages that served for vessel access.

The high vaulted ceiling further enhances the sense of scale. Upon entering from bright daylight, the space becomes dark after a few dozen meters, with the sounds of water and echoes of voices being most prominent.

This is not a well-organized museum with exhibits and lighting. The most interesting aspect is the construction itself – bare concrete and stone surfaces, the underwater channel, and the fact that the entire structure is practically embedded in the hill.

How to reach the Parja tunnel?

The tunnel is located in Parja Cove, the western and narrower arm of the large Rogačić harbor.

From the town of Vis, head towards Rogačić, then further towards Parja. The cove area can be reached by car, after which the tunnel is approached via a local path along the coast.

Rogačić and Parja are the closest excursion areas to the town of Vis, so there is no need to venture deep into the island.

For those who enjoy walking, it is also possible to start from the town of Vis. The marked route Vis – Rogačić – Parja Cove takes approximately one hour to reach Parja, with a relatively small elevation change.

This is a good option in spring, early autumn, or during cooler mornings. In the midday heat of August, a car or scooter is much more comfortable.

Can you enter the tunnel?

The tunnel can be viewed from the outside, and organized military tours of Vis enter its interior.

If visiting independently, it should be noted that Parja is not a well-maintained museum space. There is no classic reception, marked tourist paths throughout the structure, or lighting as would be found in a well-equipped underground museum.

The interior is dark, parts near the water may be wet and slippery, and the condition of certain surfaces may vary.

If entering, a flashlight or good light on a phone is practically essential, as well as non-slip footwear.

Climbing on abandoned structures or entering side areas that are not clearly passable should be avoided. For someone wanting to learn about the military history of Vis in detail, an organized military tour is a better choice than independent exploration of unknown parts of the complex.

Arriving by boat provides the best sense of its true purpose

Parja looks particularly impressive from the sea.

When approaching the tunnel by boat, it is much easier to understand why it was built here. The large dark opening appears in the rock only when one gets deep enough into the bay, and in front of the entrance is a concrete structure for docking.

From this perspective, it becomes clear that this is not just an ordinary bunker with an opening to the sea, but a facility designed for a war vessel to enter directly into the protected interior of the hill.

Today, private boats and yachts anchor in Parja and Rogačić, but the military entrance and the coast next to it should not be treated as a regular tourist mooring. Vessels should only be left where it is permitted and safe.

What else to see in Rogačić and Parja?

The tunnel is not the only reason to visit this part of Vis.

Rogačić and Parja are two arms of the same deeply recessed bay. The coast is green, the sea is mostly calm, and small natural swimming spots are located near the houses.

In the immediate vicinity, Rogačić Beach and Komarča can be visited, while towards the town of Vis are Mala and Vela Svitnja.

Above Svitnja stands the large British Fortress of King George III, also known as Fort George or Fortica, allowing for the observation of two completely different periods of Vis's military history in a very small area – British fortifications from the early 19th century and much younger Yugoslav underground military structures.

If one wishes to explore the military history of Vis more seriously, it makes sense to connect Parja with artillery positions, former barracks, and other underground facilities scattered across the island.

Why are there so many abandoned military structures on Vis?

Today, it is hard to imagine how closed off Vis was during the second half of the 20th century.

Due to its strategic location, it was transformed into a large military area with over thirty military facilities. On a relatively small area, there were barracks, an underground military hospital, artillery positions, communication facilities, and tunnels for war vessels.

Access to the island was prohibited for foreign nationals until 1989.

The Yugoslav army finally left Vis on May 30, 1992, after which many military facilities were left without their original purpose.

For tourism, this previously hidden side of Vis has become one of the more interesting stories of the island.

How much time is needed for a visit?

If coming just to see the entrance and take a quick look inside the tunnel, half an hour is quite sufficient.

If the visit is combined with a walk through Parja and Rogačić, swimming, or other military sites in the vicinity, several hours can easily be spent here.

For a first visit, it is advisable to come during the day. Sunlight at the entrance facilitates orientation, and the contrast between the turquoise sea in the cove and the almost completely dark interior of the tunnel is best seen.

Is it worth visiting the Parja tunnel?

If visiting Vis solely for the beaches, Parja may not be the first location on the list. However, if one wants to understand why Vis was a special and closed island for decades, this is one of the best places to start.

The large opening in the rock, the approximately hundred-meter-long underwater channel, and the abandoned concrete passages clearly illustrate the scale of the former military infrastructure without the need for a large museum display.

It is particularly interesting that the tunnel is located just a few kilometers from the town of Vis. After a morning coffee at the Vis waterfront, one can quickly reach a site that was once part of an almost completely closed military system.

Military Naval Tunnel Parja is therefore not only interesting for bunker and military history enthusiasts. It is one of the places that best explains the second, decades-hidden side of the island of Vis.

Name: Military Naval Tunnel Parja / Parja Subterranean Tunnel
Other name: Lobster
Location: Parja Cove, near Rogačić
Purpose: Underground shelter for military vessels; official local source cites torpedo boat
Length: approximately 100 m
Width: about 10 m
Access: by land through Rogačić and Parja and by sea
Walking arrival from Vis: approximately 1 hour to Parja Cove
Tourist infrastructure: not a traditionally organized museum
For visiting: flashlight and good footwear are recommended
Best combined with: Rogačić, Parja, Vela and Mala Svitnja, and Fort George