Traveled to the end of the Snaefellsnes Peninsula and am staying beneath the old Volcano Snaefellsjokull. Not that I can see much of it as it´s clothed in cloud at present. I pinched the picture of the Internet. According to Jules Verne you can go on a Journey to the Centre of the Earth by descending into the Crater. Don´t think I´ll be trying that. Think of the walk back.