Kolumbo Volcano – Theras younger brother

Kolumbo is an active submarine volcano in the Aegean Sea, about 300  7 km northeast of Cape Kolumbo, Santorini  Island.  It is the largest of a line of about twenty submarine volcanic cones extending to the northeast from Santorini.  It is about 3 km in diameter with a crater 1.5 km across.  Previous to the newly discovered Tamu Massif volcano in the northern…

Okmok – Another Aleutian Caldera

We here in Alaska tend to pay attention to volcanic activity, partly because parts of the state get regularly dusted, and partly because Alaska was home to one of the largest eruptions in the 20th Century – Katmai – Novarupta a century ago.  As you travel down the Alaska Peninsula into the Aleutians, you run…

The Great American Volcano – Aniakchak

The Caribou was standing on the plains 30 kilometers away from the mountain; it had not fled the roaring mountain more than that. After all, the ash was driven by the fierce wind to the north, and where it stood to the west in the early summer morning it was only a spectacular view. It…