Hármasliget Reserve
A unique 2-hectare marshy peat-bog area — a refuge for plant rarities
surviving from the Ice Age, including the dwarf birch Betula nana.
A piece of the Ice Age in the Giurgeu Mountains
The Hármasliget reserve in Borsec is a botanical reserve of national importance in Harghita County. Its main purpose is to preserve plant rarities surviving from the Ice Age in a marshy clearing near the spa resort.
🌿 The reserve is an area of about 2 hectares of marsh and peat bog, where the main feature is the dwarf birch (Betula nana) — a glacial relict, that is, a rare species surviving since the Ice Age. Nowhere else in Transylvania does this species occur at such a low altitude and on such a small area!
🦎 The area is exceptionally rich in medicinal herbs and bog vegetation. In spring, salamanders and frogs are often seen here — amphibians especially favour the wetland habitat. A true botanical and zoological treasure!
🏞️ The reserve is an integral part of the Borsec spa resort — no separate trip is needed; it fits naturally into a town visit.
The marshy peat-bog area and the dwarf birch · local source
Betula nana — a remarkable glacial relict
❄️ The dwarf birch (Betula nana) is one of the 4 European endemic birch species. It is a glacial relict plant — that is, a rare species surviving since the Ice Age, which lives only in very cold, mountain or northern habitats.
📏 Features: A deciduous, bushy dwarf shrub. Its small, serrated leaves turn vivid yellow in autumn. Yellowish-brown catkins adorn it in spring. The leafy part grows only 30–60 cm tall — this is the full size of the species!
🌍 Geographic range: The dwarf birch occurs in Europe in higher-altitude areas (Alps, Carpathians) and in perpetually cold regions (Northern Europe: Iceland, northern Scotland, Scandinavia). In the Carpathians it is particularly rare — its presence in the Borsec peat bog is an exceptional natural treasure.
🧬 Scientific significance: The plant has lived for more than 24,000 years in hybrid populations of the Carpathian basin. It occurs in only a few places in all of Transylvania — Hármasliget is one of its most important habitats.
Inhabitants of the reserve
Hármasliget is not only a refuge for the dwarf birch — across the 2-hectare marshy peat-bog area many other plant and animal species can be found, especially in spring and early summer, when flora and fauna are most active.
Dwarf birch (Betula nana)
The main attraction — a glacial relict, a bushy shrub 30–60 cm tall. In autumn it is adorned with yellow leaves.
Bog medicinal herbs
A rich medicinal-herb flora — plants typical of marshy habitats. Most spectacular in spring.
Frogs and salamanders
Often seen in spring — home to amphibians that favour wetland habitats. A loud chorus during the mating season.
Birds
An important habitat for bog and forest birds — best seen and heard in spring and early summer.
Insects
A habitat for the bog's characteristic dragonflies, butterflies and other insects. A treasury of biodiversity.
Marshy habitat
The peat bog is a unique ecosystem — water catchment, habitat and climate regulator all in one.
The scientific importance of Hármasliget
🌍 Botanical reserve of national importance — part of the Romanian protected areas system, that is, one of the areas with the highest level of protection. An ecological asset of not just local but national scope.
🧬 Glacial relict habitat: Hármasliget is one of the few places in Transylvania where a slice of the Ice Age flora has survived to this day. Scientifically, a treasury of palaeobotany.
📚 Botanical research site: Romanian and Hungarian biologists regularly study the area — documenting the fauna and flora is important for monitoring climate change.
🎓 Educational value: an excellent place for students, teachers and botanists to learn about natural ecosystems. Part of the study trips run by Borsec schools.
Hármasliget on the map
The map below shows the exact location of Hármasliget — near the Borsec spa resort, easily reached from the town centre.
Source: Excel database A34 — GPS: 46.97489°, 25.56639° | Map: OpenStreetMap
Useful information
How to find
- Location: Borsec spa resort
- GPS: 46.97489° N, 25.56639° E
- An integral part of the spa resort
- 5–10-minute walk from the centre
When
- Open to visitors all year round
- Admission: FREE
- Most beautiful: spring – early summer
- Flora and fauna are most active
What to bring
- Waterproof shoes (it is marshy!)
- Camera
- Plant field guide (for botanists)
- Mosquito repellent in summer
Protected area!
- Do not pick plants!
- Do not disturb the animals
- Do not leave litter
- Stay on the marked path