Mountt Ruapehu’s Crater Lake has started to cool and the level of seismic activity has decreased. The temperature had declined to about 37°C in late April and is now at 34°C. The lake has been in a heating phase which started in late 2014 when the lake was 15°C, reaching a peak of over 40°C in late January–early February 2015.

For more information on the latest Ruapehu activity update from GNS  http://info.geonet.org.nz/pages/viewpage.action?pageId=14221316