The area around the Picos de Europa holds some of the best canyons in northern Spain: gorges carved into the limestone by water, with jumps into deep pools, natural slides, short abseils and a striking vertical feel.
The local outdoor-activity companies run guided half-day descents — from family beginner routes (canyons with no compulsory jumps) to technical canyons for anyone with prior experience. All the kit is included: wetsuit, helmet, harness, neoprene boots.
Usual minimum age: 10-12, depending on the canyon. The season runs from June to September, when the water level and temperature are right. Twenty minutes from Alles to the most common starting points.
There are local outdoor-activity companies you can contact for prices and to book the activity.