Klaus and I walked together one day and part of another. When I met him we were decending a fairly steep hillside. He was so sweet, standing close by me to be sure I was OK, but still letting me find my own way. We walked and talked for awhile.
I saw him again on the way up Alto de Perdon, outside of Pamplona.
I told him then that it was the highest incline/descent we'd be facing on the whole trip. I was wrong. At least now I can apologize for my misinformation.