Also known as: Picu Urriellu
The Naranjo de Bulnes (Picu Urriellu) - walking beneath the iconic limestone tower to its base refuge

The line through Picos de Europa (Central), Spain - waypoints, elevation and the day-by-day shape of the walk.
Jun-Oct
Fast mountain weather, cloud, cold
Best Jun-Oct; snow lingers; a big ascent from Sotres. Confirm.
A big limestone-valley ascent to the base of a legendary tower
Non-technical walking/hiking; confirm any exposed or scrambly sections locally
Marked/waymarked route; navigation generally straightforward - carry a map and confirm locally
Suitable for reasonably fit hikers; not wheelchair accessible - confirm specifics
A popular, well-known route - busier in peak season
Overnight at Urriellu; the Collado Pandébano shortcut
Sotres (or Pandébano)
Out-and-back/loop - no shuttle needed
Refugio de Urriellu (staffed in season)
Day-hike kit, water, sun/rain protection, sturdy footwear; coverage varies
Services in Sotres; limited or none on the trail
Not required; self-guided
No permit; Refugio de Urriellu at the base. Confirm.
Permits and operators change - confirm before booking.
The big climb, karst terrain, weather, cloud
Retrace the route to exit; dial local emergency services; carry a means of calling for help where remote
This profile is desk research, compiled from public sources - not a first-hand trail report. Coordinates are approximate.