Beyond The Lake There Is A Horrible Region In Which Dense Volumes Of Smoke Proceed From The Upper Ground, With Loud Bellowings And Detonations, And We Took Our Perilous Way In That Direction, Over Very Hot Lava Which Gave Way Constantly.

It is near this that the steady fires are situated which are visible from this house at night.

We came first upon a solitary "blowing cone," beyond which there was a group of three or four, but it is not from these that the smoke proceeds, but from the extensive area beyond them, covered with smoke and steam cracks, and smoking banks, which are probably formed of sulphur deposits. I only visited the solitary cone, for the footing was so precarious, the sight so fearful, and the ebullitions of gases so dangerous, that I did not dare to go near the others, and never wish to look upon their like again.

The one I saw was of beehive shape, about twelve feet high, hollow inside, and its walls were about two feet thick. A part of its imperfect top was blown off, and a piece of its side blown out, and the side rent gave one a frightful view of its interior, with the risk of having lava spat at one at intervals. The name "Blowing Cone" is an apt one, if the theory of their construction be correct. It is supposed that when the surface of the lava cools rapidly owing to enfeebled action below, the gases force their way upwards through small vents, which then serve as "blow holes" for the imprisoned fluid beneath.

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