When the camino returns to the N-634 things get a bit confusing. There are two routes here, one that follows the road all the way to Buelna and beyond and an alternative which follows the coastline. The second route is the preferred option for its safety and scenery but it can be difficult to locate.
To follow the coastal route cross the N-634 when you get to it and turn left to follow it towards Buelna. The turn off is almost immediate and the arrows to show the way are frequently covered over with black paint so look for either a yellow arrow or a mess of black paint. To your right is a small path that crosses the railway line. Follow this trail and it will bring you to Buelna.
The turn off is to the left, remember that in Asturias the shell symbols are typically oriented such that the ‘hinge’ of the symbol represents Santiago.
The albergue is down this side road a short distance. Beyond it the camino descends and then turns off to the right, crosses uphill through some forests and then zig-zags back down to the N-634. See notice below.