Northern Iceland is a dream for the adventurous traveler (well, really Iceland as a whole, to be honest!). The Hverfjall crater, or Hverfjall volcano, in northern Iceland gives people the chance to walk the rim of an ancient volcano. It is one of the best preserved ancient volcanoes you can see today. Walking the rim of this huge crater gives visitors a sense of the immense size and dramatic explosion that must have occured when the crater was created between 2,500 and 2,900 years ago.