In New Zealand, there are no human remains, artefacts or structures which are confidently dated to earlier than the Kaharoa Tephra, a layer of volcanic debris deposited by the Mount Tarawera eruption around 1314 CE. The 1999 dating of some kiore (Polynesian rat) bones to as early as 10 CE was later found to be an error. New samples of rat bone (and also of rat-gnawed shells and woody seed cases) gave dates later than the Tarawera eruption except for three which dated to a decade or so before the eruption.