In their creative and imaginary play, Pearl and Jedd said that they had a secret door that went underground to Jedd's underground house. The fact that some Australian families live in underground homes was discussed. As a follow-up activity, photos of underground homes, motels and shops at Coober Pedy were shown. A map was used to locate Coober Pedy and the reasons why they live undergound, ie. searching for opals and to avoid the heat, were talked about. We also looked at Jennine's opal ring.