Inside an ice cave - on top of a volcanoTo play this video you need to enable JavaScript in your browser.This video can not be playedInside an ice cave - on top of a volcanoCloseWatch the full episode on BBC iPlayer.SubsectionEuropePublished3 JulyShareclose panelShare pageCopy linkAbout sharingRelated topicsIcelandFollow Icelandclose panelYou are now following IcelandUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description