On Sunday afternoon we took a stroll up to the old castle ruins above the town of Boltaña - which is where our flat is. Boltaña, like so many of these old European towns, comprises of the "old town" up on a hill with the new town spread out below it. The castle is higher still, up above the old town. The footpath up to the castle from the old town is easy enough and not too steep, but if you start off down in the new town, walk up to the old town and then continue on up to the castle you will have climbed a fair way. :-)
