Photo story: pic was made by cheap mobile phone Samsung G600. Its the second biggest crater on Etna. During my hike there was small eruption in a main crater. Entire volcano shake, dust went into the sky then fall dawn on snow, me, my companion and we all became black :) What U see here is a steam, melted snow plus some SO2/SO3/H2S. Photo is very bad, view is astonishing.