Piatra Altarului Cave
About Piatra Altarului Cave
Piatra Altarului Cave lies in the Bihor Mountains, in the upper basin of the Someșul Cald, on the right slope of the Ponor Valley, within the village of Răchițele, close to the boundary between Cluj and Bihor counties. The Systematic Catalogue of Romanian Caves lists it as the Cave of Piatra Ponorului, after the group of rocks above it; the name it is known by comes from a formation in the Palace Hall that resembles an altar. The cave was discovered in 1984 by Daniel Cârlugea, then a student, and cavers from the Politehnica Cluj club explored and mapped it.
It is a 2-hectare speleological reserve within Apuseni Natural Park, protected by Law 5/2000, and one of the class A caves, the highest protection class. The park administration regards it as the most valuable cave in Romania. As state public property, it cannot be sold, leased or let as a concession. In the 1990s, bauxite prospecting above the cave was halted.
What lies inside
The access passages are narrow and full of clay and mud. Beyond them open four large chambers: the Palace, about 30 m high, shaped like a Gothic cathedral, with calcite flowstone and domes; Paradise, with columns, discs, calcite macrocrystals, palm-tree columns, draperies and cave pearls, which ends abruptly at a stream of moonmilk; the Geode, its walls entirely covered in calcite crystals; and the Altar, also called the Bear Cemetery, where skulls of young cave bears lie beneath a thick crust of calcite. A nest of cave pearls has been dated to about 14,000 years.
Good to know
The cave cannot be visited and will not be developed for tourism: the entrance is padlocked, and access requires the approval of the Apuseni Natural Park Administration and of the Speleological Heritage Commission, granted only for scientific research. The formations are very fragile, and the passage at the entrance calls for caving training. Show caves in the Apuseni include Bears' Cave and Scărișoara Ice Cave; Coliboaia Cave, with its cave drawings, is also closed to the public. Near Răchițele you can see the Bride's Veil Waterfall, and towards Padiș, Cetățile Ponorului.
Information verified on 31 October 2026.
- The Palace Hall, about 30 m high, shaped like a Gothic cathedral, with the formation that gave the cave its name.
- Paradise, with palm-tree columns, discs, draperies and cave pearls, ending abruptly at a stream of moonmilk.
- The Geode, a chamber whose walls are entirely covered in calcite crystals.
- The Altar or Bear Cemetery, with skulls of young cave bears held beneath a crust of calcite.
Good to know before you go
- Getting there
By car: the cave cannot be visited and its entrance is not signposted. The nearest village, Răchițele, is ~74 km (~1 h 25 min) from Cluj-Napoca, on the DN1 (E60) to Huedin and then via Mărgău; from Huedin it is ~27 km (~30 minutes), and from Oradea ~118 km (~2 h 20 min).
Public transport: the nearest railway station is Huedin, on the Cluj-Napoca – Oradea line; beyond it you need a car.
- Rules
The cave is a speleological reserve in Apuseni Natural Park. Entering the park's undeveloped caves requires the approval of the Apuseni Natural Park Administration and, where applicable, the authorisation of the Speleological Heritage Commission; here only scientific research is approved. Unauthorised entry into caves is punishable by law.
- Facilities
No facilities
Frequently asked questions about Piatra Altarului Cave
Can you visit Piatra Altarului Cave with kids?
No, Piatra Altarului Cave is not recommended for visits with children (no tourist access).
How do I get to Piatra Altarului Cave?
Piatra Altarului Cave is located at Ponor Valley, in the upper basin of the Someșul Cald, about 11 km south-west of the village of Răchițele, Răchițele, Cluj County. More under “Getting there”
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