The cave is located at the spring of Mali Pek, 2 km from town Majdanpek in Eastern Serbia.

It is a river cave through whose entire length flows the Rajko's River (Рајкова река). During the summer river channels inside the cave can become dry.

The total length of the cave is 2,304 meters while the tourist path is 1,410.5 meters long. Air temperature is constant - 8 degrees Celsius and relative humidity is 100%. The cave consists of two physically separated caverns: an underground river channel and a spring cave, both of which have two floors. The Rajko's cave has the highest quality of cave ornaments. Tourism There is a permanent organized guide service at Rajko's Cave. Tours last 60 minutes. Visiting hours are from 9.00 a.m. to 6.00 p.m. (from April 1 to October 31), and in winter period by appointment at Majdanpek tourist center.

This panorama shows the largest hall in this cave system.