For two weeks we follow the water as it runs downhill. Hour after hour, day after day, the tunnels look the same. I daydream, walking, walking, walking, thinking of home, when suddenly...

I notice the stream isn't there! I look around, and can't see my uncle or Hans anywhere! I thought I was just behind them! Maybe the tunnel split into two and I took a wrong turn? Should I go back? But maybe the stream just dried up, and I'm on the right path, but was walking too slowly? Should I run ahead? Or what else can I do?