Zmeevi Dupki Cave (The Dragon’s Holes) is one of the lesser-known yet deeply intriguing natural destinations in the Sredna Gora mountain range. Nestled at the foot of the majestic Beter Peak, it offers visitors a flawless blend of pristine wilderness, local folklore, and a refreshing outdoor escape. It is the perfect spot for those looking to leave the city noise behind and immerse themselves in the magic of "undiscovered" Bulgaria. Natural Phenomena and Legends - Beter Peak (809 m): The forested dome towering above the cave is widely known as the "natural barometer" of Stara Zagora. Its name implies something "harsh" or "wicked," and for centuries locals have used it to forecast the weather—if clouds crown the peak during a northeastern autumn wind, rain is certain to last for at least two days. - The Legend of the Name: The toponym "Zmeevi Dupki" refers to ancient legends of dragons (zmei) that once inhabited the caves and guarded the lands of the nearby Zmeyovo village. Route and Accessibility - The Trek: The hike to the cave takes approximately 1 hour through the scenic landscapes of the Radinska River valley. The trail is easy and pleasant, making it suitable for hikers of all fitness levels. - Markings and Waypoints: The path is well-defined with white-green-white trail markings. For extra guidance, signposts and yellow ribbons on the trees lead travelers directly to the site. - Off-Road Access: For adventure enthusiasts, the area is accessible by 4x4 vehicles via a forest road, with the cave located just 40 meters from the path. Health and Wilderness - Eco-Therapy in Sredna Gora: The area around Zmeyovo village is renowned for its crisp, clean air and lush forest vegetation. A nature walk here is a rejuvenating experience and an excellent way to recharge over the weekend. - Biodiversity: On the way to the cave, you will experience an authentic environment that has preserved the wild spirit of the mountain, far from the commercial tourist hubs.
Zmeevi dupki is located in Sliven, Bulgaria.
Zmeevi dupki is most easily reached by car. Use the coordinates above to navigate, or open the location in OpenStreetMap or your preferred maps app for turn-by-turn directions. Public transport options vary by region — for remote destinations a rental car gives the most flexibility.
Caves can be visited year-round — the temperature inside stays roughly 10–12°C regardless of season. Spring and autumn are quieter than peak summer. Bring a warm layer and sturdy footwear; some caves close in winter when access roads become impassable.
Access to caves varies. Show caves typically run guided tours during posted opening hours; wild caves require proper equipment and experience. Inside, the temperature stays cool year-round (~10–12°C) — bring a warm layer, sturdy non-slip footwear, and a torch even on guided tours.
