Plaque about the timber industry on the Rockingham Waterfront Pioneer Rotary Walk in Rockingham, Western Australia. It reads, "Timber Industry Developed strongly until the government built a railway line from Fremantle to Bunbury which was opened in 1893. The demise came when large vessels could not sail over the 'Parmelia Bank'. Mangles Bay port ceased to operate. In 1908 the steamer 'Una' was the final cargo vessel to load Jarrahdale timber."