In reply to bespoked:
PICOS:
If you've hired a car you can park at the Colláu Pandébanu
https://www.google.com/maps/@43.2320939,-4.7794676,19z
and its about 2km to the Refugio Teranosa (they have a Donkey) and a further 4-5km to the Refugio Vega de Urriellu which sits under the Naranjo de Bulnes. The terrain is steep so I recommend shorter legs be overnighted in the Teranosa. You can no longer stay in the Refugio Cabana Veronica - except in emergencies. It was manned when we went as a comms point for mountain rescue. No food or beer either
The Picos is split in two by the above mentioned Cares Gorge (ditto the walk. Long but rewarding. Parents will enjoy the local cider, but be warned - its dang strong!). The above huts are on the Eastern side.
On the West side you can drive to the Refugio Vega de Enol which overlooks a Vega - a high pasture. Less interesting mountain activity wise but very pretty.
In Spain there are two types of Col. A Collado you can walk over easily with a path on both sides, and a Horcado which has a path up one side and a then a steep scramble - possibly roped, possibly impassable - on the other. The best known Horcado in the Picos is the Horcados Rocos which has a rope.
Post edited at 15:18