A few days ago we have welcomed back a couple of our dear friends, Bill and Nancy, who have returned to do another year of volunteer service with us. Here’s one of their first impressions: Sunday evening we walked up the Sarka Valley, that valley with such steep sides and cliffs facing it and paths running up the hills that you feel like you are walking in the mountains, that lies within the Prague city limits. It is almost like a wilderness. Hiking the valley is one of our favorite activities whenever we are here. There had been a lot of rain but the trail was not as muddy as we…