Rajko's Cave, Natural monument cave in Majdanpek, Serbia

Rajko's Cave is a natural limestone cave in Majdanpek containing multiple chambers connected by passages. The interior displays formations of stalactites and stalagmites throughout its galleries.

The cave formed through natural geological processes over millions of years. The area around Majdanpek developed as a mining region, which led to the discovery and exploration of underground formations.

The cave is named after Rajko Vojvoda, a 19th-century innkeeper who, according to legend, robbed Turkish caravans by night and hid the treasure inside. A formation along the concrete path, "Hanged Hajduk Rajko", recalls him. The chambers carry names visitors hear on the tour: Concert Hall, Hedgehog Hall, the Small and Great Organs, Winter Fairy Tale with the White Bear, and the Crystal Forest.

The cave is reached via maintained pathways with guided tours through the chambers. Visitors should wear sturdy shoes and be prepared for wet and slippery areas.

The cave maintains a constant temperature of around 8 degrees Celsius throughout the year, creating stable conditions for mineral formation. This steady environment allows scientists to observe natural geological processes.