Fascinating Tree 3

What do You Suppose is Inside the Room?

I have to assume there is a source of nutrition and water inside this room. Did they have a house plant they started in their room that has escaped to the outer world? Some buildings sport ivy growing on the outer walls. Most don't have trees. As it is both plants, animals, and humans each with determination, faith, and courage strive to succeed. Some, however, without faith get discouraged and give up.