Alaid Volcano. Kuril Islands (photo)

Alaid is the tallest and northernmost volcano in the Kurile Islands. The symmetrical stratovolcano rises 3000 m from the sea floor and forms a small island. It has a 1.5-km-wide summit crater breached to the south. It is one of the Kuriles’ most active volcanoes. Large explosive eruptions occurred in 1790 and 1981, and were among the largest in the Kuriles in historic times.