Rtanj is a majestic pyramidal mountain in eastern Serbia, renowned for its challenging hiking trails, endemic herbs, and mysterious legends. Access is primarily by car to various trailheads, with routes varying in difficulty; the southern approach is generally easier, while the ascent to Šiljak peak (1,565m) from the north is more strenuous. While experienced hikers can explore solo, guided tours are recommended for those seeking a deeper understanding of the mountain's lore or navigating trickier paths. The best time to visit is from late spring to early autumn, as winter conditions with snow and ice can be prohibitive and dangerous for unprepared visitors. There are no entry fees for hiking, with costs mainly encompassing transport, accommodation in nearby Boljevac or Sokobanja, and guided services if chosen. A typical summit hike can last 5-8 hours, making it a demanding day trip, though many opt to stay overnight to fully experience the area, including searching for the famous Rtanj tea and exploring the ruins of a chapel at the peak.