It is pro­nounced Thri­h­nuk­agig­ur, if you were won­der­ing. No mat­ter how dif­fi­cult it is to say, this dor­mant vol­cano in Ice­land is even more dif­fi­cult to get one’s head around. This is the only vol­cano on the plan­et where you can actu­al­ly go inside and explore the mag­ma cham­ber. If that doesn’t whet your appetite, maybe this trav­el­ling lark isn’t for you. Half vol­cano, half cave, all awe­some.