Ursalto-ko koba II

Ursalto-ko koba II is a cave in the municipality of Arruazu, in Navarre, in the Basque Country of Spain. It sits in the Aralar mountain range, near the Uztoki farm buildings, along the road that runs from Lakuntza toward the Aralar forest house. It is one of two neighboring caves sharing the Ursalto name — its counterpart, Ursalto-ko koba I, lies in the same spot nearby.

What does Ursalto-ko koba II look like?

The cave has a small entrance, and inside visitors find numerous broken stalactites, evidence of the natural karst processes that have shaped the site over thousands of years. Navarre, and the Aralar range in particular, is rich in karst terrain: the limestone bedrock has produced countless caves, sinkholes and underground passages across the area, and Ursalto-ko koba II is one of the smaller but recognizable examples of this kind of formation in the region.

How do you get to the cave?

Ursalto-ko koba II lies close to the Uztoki farm buildings, along the route connecting the village of Lakuntza with the forest house higher up in the Aralar range. This stretch is a popular hiking corridor — trails heading from Lakuntza toward Aralar pass near the cave, and the surrounding area also holds other landmarks of scenic and archaeological interest, including a nearby dolmen. For anyone walking the broader route through the area, the cave makes for a natural stop between Lakuntza and the higher ground of Aralar.

What should you know before visiting?

The cave is a natural, undeveloped site with no lighting or marked visitor paths, so anyone planning to go inside should bring their own light source and suitable footwear. The surrounding terrain is mountainous and damp, typical of the Aralar landscape, so visitors should be prepared for the changeable weather conditions common to this part of the Basque mountains.

Why visit the area around Arruazu?

Arruazu is a small village at the foot of the Aralar range, one of Navarre's most recognizable mountain areas. The region combines striking natural features — extensive karst landscapes, beech forests and upland pastures — with cultural heritage that includes traces of shepherding and megalithic settlement. Small caves like Ursalto-ko koba II are part of this broader landscape mosaic, one that draws hikers, cavers and nature enthusiasts alike.

Frequently Asked Questions

Is Ursalto-ko koba II set up for visitors? No, it is a natural site with no tourist infrastructure — there is no lighting, handrails or marked routes, so entering requires your own equipment and caution.

How do you reach the cave from Lakuntza? The cave lies along the route from Lakuntza toward the forest house in the Aralar range, near the Uztoki farm buildings — the most practical way there is on foot, following the trail in that direction.

What is the difference between Ursalto-ko koba II and Ursalto-ko koba I? They are two separate caves located close together in the same spot near Uztoki — Ursalto-ko koba II is one half of that pair.

What can you see inside the cave? Inside are numerous broken stalactites, a sign of the natural karst processes that have shaped this small cave over the centuries.