What is so special about Yellowstone?

The long-dormant Yellowstone super-volcano – more exactly, a complex of volcanoes in the United States – has unique origins and a completely different activation process from that commonly badociated with volcanoes. The Yellowstone Caldera is part of the Rocky Mountains and is located primarily in Wyoming. As is typical, it was supposed to be powered by the heat of the heart of the earth. However, the reconstruction of an "image" of the Earth under Yellowstone, using seismographic data, suggests that the Yellowstone volcanoes were produced by a gigantic old oceanic plate that plunged under the United States ago. about 30 million years. This ancient ocean plate broke into pieces, causing unusual rock disturbances in the mantle. In turn, this has led to volcanic eruptions during the last 16 million years. Thus, an old oceanic plate could be the cause of the hotspot. – Science Daily