Biserujka cave

Biserujka Cave is a small karst cave on the island of Krk, located roughly 300 meters northwest of the village of Rudine, and it is the only cave on the entire island open to tourists. The site combines a geological curiosity with a local legend about a hidden treasure, which is said to be the source of its name (biser – pearl).

How do you get to the cave?

The cave sits right by the village of Rudine, in the northern part of Krk, not far from Vrbnik and Dobrinj. Driving is by far the easiest option, since there is a parking area right at the entrance. The surrounding roads are well signposted, and the drive from the island's main routes usually takes no more than fifteen minutes. Travelers without a car may need a taxi or a bicycle, as public transport in this part of the island is limited.

What will you see inside?

The cave stretches about 110 meters and reaches a depth of up to 15 meters. Despite its modest size, it impresses with a rich collection of speleothems – stalactites, columns and calcite draperies, all lit to highlight their shapes. The visitor route runs through a series of named chambers: the Entrance Hall, the Balcony, the Shaft, the Great Hall, the Northern Channel, the Vaulted Hall and the Cypress Hall. Several endemic species live inside, adapted to darkness and a constant temperature.

The cave's recorded history goes back to the 19th century – the first written mention dates from 1834, when court documents described it as a smugglers' hideout. Legend has it that a treasure was hidden inside, though it has never been found.

When is the best time to visit?

Biserujka Cave is open seasonally, from April to October. Opening hours vary by month: typically 10:00 to 15:00 in April and October, 09:00 to 17:00 in May and June, and 09:00 to 18:00 in July and August. The best time to visit is in the morning during the summer season, when it gets hot outside – the temperature inside the cave stays cool year-round, making it a pleasant escape from the heat.

What is the tour like?

Visits are guided and last between 25 and 30 minutes. Tours are offered in several languages – Croatian, German, English and Italian – making the cave accessible to visitors from different countries. The path is lit and fitted with handrails, so the walk is safe even for less experienced visitors, though the uneven ground and humid air are worth keeping in mind.

Admission costs around €6 for adults and €4 for children aged 5 to 12, while children under 5 enter free of charge.

Frequently asked questions

How long does a visit to Biserujka Cave take? A standard guided tour lasts between 25 and 30 minutes and covers all the main chambers of the cave.

Is the cave open all year round? No, the cave operates seasonally, from April to October, with opening hours that vary depending on the month.

Is it cold inside the cave? The inside maintains a constant, cool temperature throughout the year, making it a refreshing spot on hot summer days – it's worth bringing a light jacket or sweater.

Where does the name Biserujka come from? The name comes from the word "biser," meaning pearl, and is tied to a legend about a treasure supposedly hidden in the cave that has never been discovered.