Recent geological studies have pointed to an active super volcano lying underneath Yellowstone Nation Park.
A super volcano is a volcano that will produce a huge catastrophic eruption and has a giant caldera. A caldera forms when magma rises from the mantle to create a boiling reservoir in the Earth's crust. This makes a chamber of boiling hot liquid rock also known as magma.
These calderas begin to grow very slowly while building up an enormous amount of pressure. After Laying seemingly dormant for thousands of years It violently erupts sending ash, dust, and sulfur dioxide into the atmosphere, reflecting the sun's rays and creating a cold wave that could last for years.
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