The superstructure was built from ironbark and spotted gum. It also has native trees such as spotted gum. Wood samples revealed it is made from Sydney Blue Gum, Stringybark and Spotted Gum. The timber of spotted gum is strong, and exploited in a range of construction uses. It also grows with spotted gum ("Corymbia maculata") and blackbutt ("E. pilularis"). Spotted gum (Corymbia maculata) is also known to have occurred in the Prospect area. Spotted Gum (Corymbia variegata) and Narrow-leaved Ironbark are two of the main species. Spotted gum ("Corymbia maculata") is also known to have occurred in the Prospect area.