In the late 19th century Auckland's main export was kauri gum. One rich source of the gum was the swampy land around Dargaville where kauri forests had been cleared. Gum-digging was tough work, often done by Dalmatian immigrants and by Māori. Today the Dargaville area is known for growing kūmara (sweet potato). Archival audio sourced from Radio New Zealand Sound Archives, http://www.soundarchives.co.nz/. Sound files may not be reused without permission from Radio New Zealand Sound Archives (Reference number 27604).