They have opened this tour into the volcano, to the public for a few weeks this summer 2012 only: http://www.insidethevolcano.com/ They will then assess the environmental impact, etc & decide whether it will be put on again. My son Mark (MarkFreeman408 on YouTube), his friend Josh, and filmmakers Marcus & Kelly from Skylight Films (http://www.skylightfilms.ca) are here in Iceland on a holiday/filming/adventure trip. We felt privileged to be able to go inside 120 metres / 400' down into a 4,000 year old volcano magma chamber. This is the only place in the world that is offering, or has ever offered this. Previous to this year, only a limited number of scientists were allowed in & spent hours rappelling down by rope .. we went in by a lift, after a 1 hour hike across an ancient lava field. The original volcano exploration in 2011 was featured by National Geographic:

http://news.nationalgeographic.com/news/2011/04/pictures/110407-volcano-first-descent-magma-chamber-geographic-lava-iceland/

http://www.zmescience.com/science/geology/volcano-magma-chamber-10042011/

Photos of the volcano:

http://bit.ly/OwBFse

This year's special tour (2012):

http://www.insidethevolcano.com/the-tour/

http://www.guardian.co.uk/travel/2012/jun/22/volcano-tour-iceland-interior#_

http://www.telegraph.co.uk/travel/weird-wide-world/9236627/Iceland-offers-worlds-first-tour-inside-a-volcano.html

http://www.abovetopsecret.com/forum/thread687592/pg1

http://www.visiticeland.com/DiscoverIceland/WhatsOn/View/insideavolcano

http://www.dailymail.co.uk/travel/article-2137869/Iceland-volcano-tours-Intrepid-tourists-inside-crater-dormant-volcano.html

http://www.dailymail.co.uk/travel/article-2165549/Iceland-volcano-tour-Into-heart-volcano-lava-chamber-Icelandic-adventure.html

Volcanos in general:

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