Photo: Gretel Boswijk
Director of the tree ring lab at the School of Environment at the University of Auckland, Dr Gretel Boswijk, tells Kathryn Ryan how analysing Kauri rings helps her discover more about the history of New Zealand's weather patterns and date archaeological sites. Gretel has been able to date on wooden posts from the Otahau Pa, north of Hamilton to within 4 years either side of 1768, from Kauri's fingerprint.
