Impressive cavity, until a while ago you could go through. They have recently put up a sign, warning of the danger of contracting Q fever, and the passage is prohibited.
One of the most beautiful caves I have ever seen. First because of the location, second because of the small challenge of not getting lost to get there, and thirdly …
Cave inside the so-called Great Central Crack, in the Itzina Massif. Its interior can be accessed by descending the ramp of the natural tunnel from the mouth of Axlegor, municipality of Orozko (Bizkaia).