Snafellsjokull

The 1446m, three-pronged peak of Snaefellsjokull was created when the volcano beneath the glacier exploded and collapsed into the magma chamber, forming a caldera. Although there are no reports of eruptions during the human history of Iceland, it is not yet considered extinct. 

The document that sent Jules Verne’s adventures into Snaefellsjokull, and on their way to the centre of the earth, read as follows:

Descend into the crater of Yocul of Sneffels,

Which the shade of Scartaris caresses,

Before the calends of July, audacious traveler,

And you will reach the centre of the earth, I did it.