crater is a trace left after a volcanic eruption. We can find large and small craters all over the world. It is usually in the shape of a bowl with a low-lying center around it. This is the product of volcanic lava accumulation. For ordinary volcanoes, such craters are generally formed, such as Changbai Mountain Tianchi, which is a crater topography, a mountain lake formed after precipitation accumulates.
But for those super volcanoes, the situation is different.
After a higher-level volcano erupts, it will not form a standard bowl-shaped crater, because after the large-scale lava eruption ceases, there will be small volcanoes inside the crater that continue to erupt. In this case, the lava will be inside the large crater Keep accumulating. The remnants of those super volcanoes are often not the shape of the crater, so it is difficult to identify.
In North America, there is a Yellowstone volcano, which is generally regarded as a representative of super volcanoes, and the crater is also very large. Scientists have determined that the diameter of the crater of Huangshi Volcano reaches 60 kilometers. One can imagine what a spectacular scene when Huangshi Volcano erupted. Nowadays, the geological activities in Yellowstone Park are very active, which may mean that the Yellowstone volcano is about to move. Some scientists are paying close attention to the situation of the Yellowstone volcano to give humans early warning when there are signs of eruption.
In the famous doomsday movie "2012", the eruption of the Huangshi volcano became a key fuse.
However, in recent years, humans have discovered a "super crater" larger than the Yellowstone Crater. It is not far from us, in Southeast Asia, southeast of Luzon Island. It was named Apolaki, which translates to Apolaki, the name of the sun god and war god in local mythology.
The diameter of Apolaki crater reaches 150 kilometers, which is more than 6 times the size of Huangshi crater. It's just that its specific location is 2500 meters below sea level, so it was discovered by humans so late. Scientists believe that the time of its eruption should be 26 million years ago or even earlier. The submarine mountains near Luzon Island were formed after its eruption.
Fortunately, the geological activity of the Apolaki crater is relatively gentle, and it should be a dead volcano.
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