They stop at a pool where they eat some yabbies, observe platypus and leave. In a valley rich in water, food, and wildlife, they survive for many days with the skills learned from the bush boy. When Peter is playing with a baby koala, Mary demands he stop out of concern the parents may attack. In doing so, the koala latches onto Mary and her dress is destroyed. Mary then reflects that while a week ago nothing more calamitous could have happened to her, now she is at ease with her nakedness. She and Peter then discover some wet clay which they use to draw pictures: Peter draws nature while Mary draws stylish women and her dream house. Eventually, the children see smoke and come across a group of Aboriginal swimmers. A man recognizes the drawings. His son owns a "warrigal", or pet dog, which serves as a link between the boy and Peter. The father sees Mary's dream house and realizes Mary and Peter seek civilization. In a wide variety of gestures and drawings, he tells the children that there is a house like that across the hills and demonstrates how to reach there. The overjoyed children thank him and begin their trek back to civilization.