A derelict former quarry has been transformed through this rehabilitation project. After more than 30 years of planting it is now an arboretum that includes many native New Zealand species as well as rare trees and shrubs from around the world.

Some of these tree species are endangered in their own habitats. They have been planted according to geographic origin in groupings Australian, Asian, South American, American, and New Zealand.

The arboretum enables visitors to learn more about the selection of trees. A tree guide was printed for over 270 trees, labelled with a white numbering system. Visitors who are interested in trees and other plants often use apps such as Google lens to identify the species, common name, and location within the Park. The tree guide can still be borrowed as it also provides aninsight into the whole rehabilitation project.