Top 10 Volcanoes in Romania
Romania is not a country most people associate with volcanoes, yet its landscape preserves a remarkable volcanic heritage. The Carpathian Mountains contain the longest chain of volcanic peaks in Europe, the Eastern Carpathians hold the continent's youngest volcano, and the foothills near Buzau host one of the most famous fields of mud volcanoes in Europe. None erupt with lava today, but together they tell a vivid story of the region's fiery past and curious present. Here are ten of Romania's most notable volcanic features.
Ciomadul
Ciomadul, in the Eastern Carpathians, is the youngest volcano in Romania and one of the youngest in continental Europe, having last erupted roughly 30,000 years ago. This lava dome complex is still considered potentially active in geological terms, with gas emissions and warm springs revealing residual heat at depth. It cradles the beautiful crater lake of Saint Ana, the only intact volcanic crater lake in the country.
The Calimani-Gurghiu-Harghita chain
Stretching through the Eastern Carpathians, this great volcanic range is the longest in Europe, formed over millions of years as the crust responded to the collision of tectonic plates. Its eroded cones and calderas, including the vast Calimani caldera, now wear forests and alpine meadows, a softened landscape that conceals an origin in intense volcanic activity.
The mud volcanoes of Paclele Mari
Near the town of Berca in Buzau County lie the Vulcanii Noroiosi de la Paclele Mari, the Big Mud Volcanoes — one of the most striking landscapes in Romania. Cold mud, pushed up by underground gas, bubbles from small cones and forms a barren, grey, almost lunar surface. They are not true volcanoes but a geological phenomenon that mimics them, and they are a protected natural reserve.
The mud volcanoes of Paclele Mici
Close by, the Vulcanii Noroiosi de la Paclele Mici, the Small Mud Volcanoes, form a second, equally famous field. Their numerous small grey cones constantly ooze mud and release gas, creating a surreal scene popular with visitors. Together with Paclele Mari, they are among the best-known mud volcano sites in Europe.
Salatele de la Arbanasi
The Arbanasi mud features add to the rich array of gas-driven phenomena in the Buzau region. Like the Paclele fields, they result from natural gas rising through water-saturated clay, pushing mud to the surface. They underscore how the Buzau sub-Carpathians have become a natural museum of this rare landscape.
Racos volcano
The Vulcanul de la Racos, in Brasov County, is a scoria cone rising to about 612 metres and one of the clearest examples of true past volcanism in Romania. The site preserves striking columnar basalt formations and an old quarry that exposes the volcano's internal structure, making it a favourite among geology enthusiasts.
Detunatele basalt columns
In the Apuseni Mountains, the Detunata formations are dramatic exposures of columnar basalt, the solidified remains of ancient lava that cooled into regular polygonal columns. While not a volcano in the conventional sense, they are a vivid record of past volcanic activity and one of Romania's most photogenic geological sites.
Saint Ana Lake crater
The crater that holds Saint Ana Lake, part of the Ciomadul complex, deserves mention in its own right. It is the only volcanic crater lake in Romania that has retained its water, a serene blue circle set in forest. The surrounding area, including the nearby Mohos peat bog within an adjacent crater, is a protected landscape of great scientific value.
Sumigu
Sumigu, a modest volcanic feature in the Eastern Carpathians reaching around 205 metres, is among the smaller named volcanic remnants of the region. Such features, worn down by erosion over the ages, hint at the broader scattering of past volcanic centres across the Carpathian arc.
The Persani volcanic field
The Persani Mountains host a young basaltic volcanic field, including the Racos cone and related features, representing some of the most recent magmatic activity in Romania outside Ciomadul. Its scoria cones and basalt flows complete the picture of a country whose volcanic story, though quiet today, is far from over in geological terms.
Explore on the map
From the youthful dome of Ciomadul to the bubbling mud cones of Buzau and the basalt columns of Racos, Romania's volcanic heritage spans the dramatic and the subtle. Explore it on the interactive map — filter by country to see Romania's volcanic features and to place them within the wider volcanism of Europe's Carpathian arc.