Pesoz is a beautiful little village in the Asturian hills about 1 hours' drive from Granero del burro. Click here for a map of Pesoz. There is a wonderful round walk which takes about 4 hours (walking slowly) and meanders its way up and down the hills and along the river side in the valley bottom. Click here for a map of the walk.
On the way back to Pesoz there is the Molino de Sequeiros which is a beautiful old mill next to the river. Inside it is still intact and next to it is a beautiful plunge pool which would be great for a Summer dip. There is even a picnic table here!
When you get back to Pesoz there is a fantastic little restaurant called As Cortes which serves great traditional food at very low prices. Last Saturday, the Menu del dia was €12 each!! After a late lunch you can visit the abandoned village of Argul nearby. There are only about a dozen houses and most of them were abandoned many years ago. A few have been restored but it is both a sad and interesting place.
If you want to make it a really full day you can then go and have a look at the dam at Grandas de Salime. There were some Crag Martins nesting under the dam wall and a pair of Choughs overhead. It is hugely impressive and you can see all the remnants of the buildings that were built during its construction. There is a nice bar nearby to have a drink at the end of the day.