Lokiz mountain range

Lokiz (Sierra de Lóquiz in Spanish) is a mountain range in the Basque Country, located in the west-central part of Navarre. It stretches roughly 22 km, from near the Álava town of Santa Cruz de Campezo to Barindano, and covers an area of nearly 140 square kilometers along the southern slope of the Améscoa valley. Its highest point reaches 1,255 meters above sea level.

Where exactly is the Lokiz range?

The range sits at the meeting point of several historic valleys: Lana, Améscoa Alta, Améscoa Baja, Allín, and Valdega. Around the sierra are settled 25 towns belonging to these five valleys, with the Valle de Lana lying almost at the heart of the massif. It's from these villages that most of the hiking routes onto the Lokiz ridgeline begin.

What does the landscape look like?

Lokiz is a karst massif with an elongated shape and a rugged, weathered character. Its slopes are cut by deep ravines and gorges, and the varied terrain supports a rich mix of fauna and flora. Vegetation changes with elevation: oak and holm oak, along with strawberry trees (madroño), dominate the lower zones, while beech forests take over higher up. The limestone, karst nature of the range also means caves, sinkholes, and other typical formations of this kind of mountain terrain.

What is the history behind managing the sierra?

For centuries, the use of the mountain — grazing, timber, access to pastures — was governed by unwritten custom among the residents of the surrounding valleys. Disputes between towns over boundaries and resource rights eventually grew serious enough that, in 1357, a document known as "El Apeo de Lóquiz" was drawn up, formally settling the legal and social terms for using the sierra. This medieval charter remains a key reference point for understanding the traditional management of shared mountain commons in this part of Navarre.

What should visitors know before heading there?

The Sierra de Lokiz is above all a destination for hikers and nature lovers: steep ravines such as the barranco de Zologorri, along with peaks in the Montesanto and Arnaba area, are among the most popular routes in this part of Navarre. Given the karst terrain and significant elevation changes, sturdy hiking boots and a trail map are recommended, since some paths cross remote, poorly marked ground. The surrounding villages of the Lana and Améscoa valleys serve as trailheads and have kept the rural, traditional character typical of Navarre's interior.

Frequently asked questions

Where is the Sierra de Lokiz located? In west-central Navarre, on the border with Álava, between Santa Cruz de Campezo and Barindano.

How high is the range's highest peak? The highest point of the range reaches 1,255 meters above sea level.

How many towns surround the sierra? Twenty-five towns, spread across five valleys: Lana, Améscoa Alta, Améscoa Baja, Allín, and Valdega.

What is "El Apeo de Lóquiz"? A 1357 document that formally regulated the legal and social rules for using the mountain among the surrounding communities, drawn up to settle disputes between towns.