I am going to tell you about Volcanoes and how they were formed
Volcanoes such as Yellowstone Caldera are created by plate tectonics. I am going to tell you how this landform was created.
In my research I found out that the Yellowstone Caldera was created millions of years ago when a "Hotspot" formed below the earth and pushed the magma out, and as the volcano erupted, the magma hardened and kept building the volcano (Erosion after the mountain was created)
Volcanoes are made by tectonic plates smashing into each other, forcing the magma up, like this
They are Convergent because the plates are moving to each other
Tectonic Plate (Juan De Fuca Plate)
Tectonic Plate (North American Plate)
Magma forced up and creates the Volcanos
That's How Volcanoes (Yellowstone Caldera) Are Formed!