Ring of Fire was due. In 2000, the ERLAWS system was installed on the mountain to detect such a collapse and alert the relevant authorities. The Auckland volcanic field on the North Island of New Zealand has produced a diverse array of explosive craters, scoria cones, and lava flows. Currently dormant, the field is likely to erupt again with the next "hundreds to thousands of years", a very short timeframe in geologic terms. The field contains at least 40 volcanoes, most recently active about 600 years ago at Rangitoto Island, erupting 2.3 km of lava. The Pacific Ring of Fire is completed in
Ring of Fire holding the record for the second-largest earthquake in the world, the Good Friday earthquake, and having more than 50 volcanoes which have erupted since about 1760. Volcanoes can be found not only in the mainland, but also in the Aleutian Islands. The most recent activity in the American portion of the Ring of Fire occurred in early 2009 when Mount Redoubt in Alaska became active and finally erupted late in the evening of March 22. The eruption ended in May 2009. The Public Safety Geo-science Program at the Natural Resources Canada undertakes research to support risk reduction from the effects