Everything you need to know about a Lahar

DoC have confirmed a moderate lahar is underway, after alarms were activated on Mt Ruapehu's crater lake today.

But what is a lahar - is it the same as a volcano? What causes them, and, more importantly, how prepared are we?

Here is a series of previous stories the Herald has done analysing a lahar from Ruapehu.

PHOTOS: Scientists polish up crisis threat for lahar

Lahar alert rises

Crater under surveillance

First testing of the lahar alarm system, from 2004

Get the news delivered straight to your inbox

Receive the day’s news, sport and entertainment in our daily email newsletter


© Copyright 2017, NZME. Publishing Limited

Assembled by: (static) on production apcf05 at 29 Apr 2017 08:16:05 Processing Time: 740ms