Ko Okoa ko e kiʻi motu ʻi he hahake ʻo e motu lahi ʻo Vavaʻu, kae ʻoku fohokotaki ki ai mo e lākanga. Ko e hū ʻo e lākanga ʻi he motu, ko e feituʻu ia ʻo e kolo mo e hingoa tatau. Ka ko e konga ʻe taha ʻo e kolo ʻoku tuʻu ʻi he motu lahi.