The causes of the fatal slips.Did the relevant agencies take appropriate steps to warn and evacuate people?Are there lessons that can be learned to reduce future risk?

A grandmother and her grandson died in a landslide on Welcome Bay Rd, Pāpāmoa. Photo / Dean PurcellA grandmother and her grandson died in a landslide on Welcome Bay Rd, Pāpāmoa. Photo / Dean Purcell

Geotechnical engineers assess Mauao's landslide damage in June, while the mountain remains closed after the January 22 fatal landslide. Photo / Alyse Wright Geotechnical engineers assess Mauao’s landslide damage in June, while the mountain remains closed after the January 22 fatal landslide. Photo / Alyse Wright