Urriellu

Urriellu, also known as Naranjo de Bulnes, is a prominent limestone peak in the Picos de Europa, in the autonomous community of Asturias, northern Spain. It rises to roughly 2,500 meters above sea level and forms a distinctive, sheer wall that dominates the surrounding landscape. The peak lies within Picos de Europa National Park and is one of the most emblematic features of the Cantabrian Mountains.

Geology and appearance: The Urriellu is a solid limestone tower with a tall north face and a more accessible south flank. Its clean lines and vertical sections make it a classic object for rock climbing. The rock and climate support a range of climbing routes, from long, technical ascents to more moderate lines.

Climbing history and significance: The peak has a long association with mountaineering in Spain. In the early 20th century it drew climbers from across the country and helped launch organized climbing culture in Asturias. Today it remains one of the region’s most famous climbing destinations, with routes on multiple faces and a reputation for challenging, exposed climbing.

Name and nomenclature: Locally it is called Urriellu, while it is also widely known as Naranjo de Bulnes, a name attributed to its proximity to the village of Bulnes. The dual naming reflects its cultural importance in the region.

Access and conservation: Access generally begins in the village of Bulnes and surrounding trails; climbers usually hike to the base and proceed with caution, following park regulations. As a protected area within the Picos de Europa National Park, visitors are urged to follow environmental guidelines to preserve natural and cultural resources.