Silver Lake is one of many volcanic fields northern California. It consists of 3 small explosion craters The volcano consists of 3 small cinder cones and lava lakes. The craters contain lakes: Silver Lake, Author Lake, and Buckhorn Lake.
Blue flames of burning sulfur: Ijen volcano in East Java has one of the most impressive sulfur deposits on earth. They are so hot that the sulfur often ignites - a mysterious display at night caught on camera.
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