Chapters 19 and 20 Summary

In chapter nineteen, Doon discovers a framed notice on the wall of the cave. It is addressed to "refugees of Ember" and warns that there's a climb ahead that will take several hours. It does take that long and Poppy is soon too tired to walk any more. Doon and Lina take turns carrying her. When they emerge into the fresh air, Lina is amazed by the smells. There are thousands of flecks of lights above them and one larger light, but they see no lights that might indicate a city. They are in awe of the plants including trees, which they don't have a name for. They don't really know what to do so sit down to rest and eat. After awhile, Lina notices that the larger light in the sky is moving. After a few more hours, they realize...