
Forest Drive, off Lady Denman Drive, is lined with a double row of Kurrajong trees and Freefall Pin oaks. It leads to the National Rock Garden, where it was an unexpected delight to see Professor Brad Pillans, chair of the rock garden.
Brad explained there are eight large rocks (five to 16 tonnes) at the site, one from each state and territory. They were installed in 2013 as part of Centenary of Canberra celebrations and are known as the Federation Rocks. They were chosen for their special significance to the state/territory of origin. The ACT rock is limestone, 430 million years old, because Canberra was known as the Limestone Plains in the first years of European settlement and limestone was a valuable resource for making mortar for building purposes.