Tangi Tereapii was installed Numangatini Ariki at a packed Te Maruata-Nui-o-Numangatini marae.
The celebration was attended by the whole island as well as dignitaries, friends and families from Rarotonga, Aitutaki and Atiu.
Mangaia resident Allan Tuara, 77, said it was one of the biggest investiture ceremonies he had witnessed.
For the younger generation, he said this would have been the biggest event of their lives.
“It was a whole day event. There were lots of gifts, items and speeches from each puna as well as the guests from Rarotonga and other islands,” Tuara said.
All the puna had 20-metre long marquees full of food for everyone to enjoy. “There was so much food left and everyone was asked to take the leftover food home.”