Istria – Land of Underground Wonders

Land of Underground Wonders – Istria, a Croatian peninsula, is known for its stunning landscapes, rich history, and cultural heritage. Beyond its well-known charm lies a fascinating underground world. Due to its karst terrain, Istria is home to numerous caves and pits, shaped over millions of years, offering a unique opportunity to explore natural underground formations.

Here’s an overview of the most remarkable caves and pits in Istria, from land-based underground wonders to breathtaking sea caves.

Baredine Cave

Located just a few kilometers from Poreč, Baredine is the most visited cave in Istria. Open to the public since 1995, the cave stretches 300 meters underground and leads to a lake 60 meters deep. In addition to its striking natural sculptures, the cave is home to the human fish, an endemic species found only in this region.

The site also offers agricultural exhibits and local culinary experiences, providing visitors with a blend of nature and culture.

Feštinsko Kingdom

Found near Žminj in the village of Feštini, this cave earned its name from the children who referred to it as their “kingdom” while playing there. Discovered in 1940, it was re-excavated in the 1980s after being damaged and looted. Today, it is a well-maintained underground site with trails leading through formations like “bat wings” and the “Tower of Babel.”

Marble Cave (Mramornica)

Located near Brtonigla, Marble Cave is known for its vast chamber, one of the largest in Istria. The cave is 93 meters long and 51 meters wide. Mentioned as early as 1771, it is now part of the Sterle family’s agritourism property. The cave also contains prehistoric burial sites, confirming its ancient human use.

Pazin Cave

Located beneath the Pazin Castle, Pazin Cave is shaped by the Pazinčica river. According to local legend, the cave was formed when a giant, offended by a remark from the castle’s lady, kicked the ground and caused the earth to collapse. Today, Pazin Cave is a popular destination for adrenaline activities like zip-lining.

Caves of Lim Bay: Romuald’s Cave and Pirate’s Cave

Lim Bay, a protected natural reserve on the western coast of Istria, features two notable caves – Romuald’s Cave and Pirate’s Cave. Romuald’s Cave, named after Saint Romuald, holds remains of Ice Age animals and prehistoric cave paintings that are over 30,000 years old.

Pirate’s Cave, located on the northern side of the bay, is tied to the legend of pirate Henry Morgan, who supposedly buried his treasure there. The cave is now a bar offering a great view of the bay.

Sea Caves of Pula: Seagull Rocks and Fratarski Island

The coastline of Pula is home to several sea caves, including those at Seagull Rocks, just a short drive from the city center. Popular among divers and kayakers, these caves offer an unforgettable exploration experience.

On Fratarski Island, a small cave lies at a depth of 16 meters. It is surrounded by a rich marine ecosystem, featuring fish, crabs, algae, and even seahorses.

Velika and Mala Kolombarica – Cape Kamenjak

At the southern tip of Istria, on Cape Kamenjak, lies Velika Kolombarica, one of the most beautiful sea caves in the region. Visitors can explore the cave by diving or kayaking, and with some luck, you might spot a Mediterranean monk seal, which has recently returned to the area.

Whether exploring land-based or sea caves, Istria offers unforgettable experiences in its underground world.

Exploring Učka: Where the Mountain Meets the Sea

Pazin Cave