Supelegor

Supelegor is a karst cave in Orozko, a municipality in the province of Biscay, in Spain's Basque Country. Its entrance opens up on the Itxina massif, within Gorbeia Natural Park — one of the most distinctive mountain landscapes in the region.

What will you see at Supelegor cave?

Supelegor stretches for roughly 981 meters, with a vertical drop of about 50 meters and a total passage development reaching 1,300 meters. It ranks among the best-known caves in Itxina, a massif famous for an extraordinary concentration of karst formations. Within an area of just around 5 km², around 350 caves and fissures have been documented — most with vertical access — adding up to more than 70 km of galleries. That gives the area one of the highest cave-density ratios relative to surface size anywhere in the world, making Itxina a standout even by European caving standards.

The mouth of Supelegor is a striking sight in itself: a large, dark opening framed by dense vegetation, set against the raw, rocky backdrop of the massif. That visual contrast, together with the cave's scale, draws in hikers and landscape photographers alike.

What legends surround this place?

Supelegor isn't only a geological feature — it holds a deep place in Basque mythology. According to local tradition, the cave was one of the dwellings of Mari, also known as the Lady of Anboto, the central figure of pre-Christian Basque mythology, associated with mountains, storms, and the natural world. She was said to be accompanied by sorginak (witches) and lamiak, female beings with a goat's or duck's foot. These stories remain very much alive among Orozko's residents and form a key part of the area's cultural identity.

How do you get there, and what should you plan for?

The most popular route to Supelegor starts near Pagomakurre and covers just over 3 kilometers. Along the way, hikers also pass Ojo de Atxular (the "Eye of Atxular"), a distinctive round rock opening, as well as Itxulegor cave. In a single, relatively short outing, the trail links three of the most recognizable landmarks of the Itxina massif.

The terrain is rocky, so sturdy hiking boots are essential, and paths can turn slippery on wet days. A headlamp is worth carrying if you intend to look further inside the cave, though the entrance and the nearest chambers can be viewed without any specialized equipment.

When is the best time to visit?

Spring and autumn are the best seasons for exploring the Itxina massif, offering mild temperatures and particularly scenic vegetation. In summer, long stretches of the trail are exposed to direct sun with little shade, while in winter the rocky paths can ice over, making the approach to the cave more difficult.

Frequently asked questions

Can you enter Supelegor cave without a guide? The entrance and the first chambers are accessible to hikers on foot, but exploring the deeper passages requires caving experience and proper equipment.

How long does it take to reach the cave? The popular route from Pagomakurre, which also takes in Ojo de Atxular, is about 3 km long and typically takes 2 to 3 hours round trip, depending on pace and trail conditions.

Are there other attractions nearby worth visiting? Yes — the Itxina massif and Gorbeia Natural Park offer numerous trails, rock formations, and other caves such as Itxulegor, making it easy to plan a longer outing in the area.

Where do the cave's name and legends come from? The legends of the goddess Mari and her companions come from pre-Christian Basque mythology, deeply rooted in the culture of Biscay and still very much present in local storytelling today.