Nia is a young cartographer. She makes maps of rivers and hills. One morning, she walks to the misty river valley. The air is cool and soft. She carries a small notebook and a pencil. Nia wants to draw a new map of the valley.
Yesterday, a big storm came to the valley. The rain was heavy and the wind was strong. The old wooden bridge washed away. Now the river is wide and fast. Nia stops and looks at the water. She feels sad because she cannot cross.