Species associated include messmate stringybark ("Eucalyptus obliqua") and white ironbark ("E. leucoxylon"). The main timber varieties were blackbutt, stringybark, iron bark and blue gum. Forest Range was settled by timber sawyers, cutting stringybark trees for timber and charcoal. A stringybark can be any of the many "Eucalyptus" species which have thick, fibrous bark. The long strips of bark from stringybark or messmate trees are often used. "Jerringan" is the Aboriginal name for the area meaning stringybark tree. Wood samples revealed it is made from Sydney Blue Gum, Stringybark and Spotted Gum. The material of choice is the bark from Stringybark ("Eucalyptus tetradonta"). The Wollemi Stringybark is a newly discovered species of Eucalyptus tree. According to legend the armour was made on a stringybark log by the gang themselves. The name is derived from the Kabi word "bigindhan" meaning a "place of stringybark". Originally, the main industry was cutting stringybark trees for timber. Guruwiwi's art includes printmaking and earth pigments on stringybark (also known as bark paintings). Swamp stringybark is another common name, and "Gulgong" and "Gnorpin" are old names recorded.