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.SubsectionEuropePublished2 days agoShareclose 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