http://www.volcanodiscovery.com/volcanoes/facts/biggest-eruption.html

 

https://en.wikipedia.org/wiki/Volcano

 

https://en.wikipedia.org/wiki/Types_of_volcanic_eruptions

 

http://globe-views.com/dreams/volcano.html

 

 

https://upload.wikimedia.org/wikipedia/commons/d/dc/MSH82_st_helens_plume_from_harrys_ridge_05-19-82.jpg

 

CPO Focus on Earth science

 

https://en.wikipedia.org/wiki/2011_Puyehue-Cord%C3%B3n_Caulle_eruption

 

https://upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Puyehue_Cordon_Caulle_erupting_vent%2C_February_2012.jpg/800px-Puyehue_Cordon_Caulle_erupting_vent%2C_February_2012.jpg

 

 

https://en.wikipedia.org/wiki/1815_eruption_of_Mount_Tambora#Aftermath

 

 

 

https://www.thunderbolts.info/wp/2012/03/31/predicting-volcanic-eruptions-by-isohypse-reconnection/

 

https://volcanoworld.wordpress.com/2009/03/06/how-do-volcanologists-predict-volcanic-eruptions/

 

http://www.arts.com/news/discovery/2007_0317_footpaths.php