On 20 May 2006, there was an intense tropical storm that generated mudflows (lahars).
Later that same day, there was a very large collapse of the entire dome. The debris from this large event was then rapidly re-distributed in the Belham Valley during rainfall over the next year or so, as shown by the time series of a house in Belham Valley.

This photo was taken the day after the collapse and shows the coating of ash and mud across the southern island. Credit: MVO Archive. Date: 21/05/2006

In the immediate aftermath of the eruption and rainfall the lahars bulldozed through much of this house in Belham Valley. Credit: Jenni Barclay. Date: 23/05/2006

This photo was taken a week after the dome collapse and lahar and shows substantial damage to the house. Credit: Jenni Barclay. Date: 29/05/2006

At the start of the rainy season in August 2006, much of the house was still exposed by the large event. Credit: Jenni Barclay. Date: 11/08/2006

By the end of the 2006 rainy season, the house was already partly buried by smaller lahars. Credit: Jenni Barclay. Date: 01/11/2006

During the rainy season 2007, lahars ran down the valley and buried the house further. Credit: Jenni Barclay. Date: 10/2007

By the end of the rainy season in November 2007 the house was largely buried. Credit: Jenni Barclay. Date: 30/11/2007