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Origin of the Yellowstone Caldera. Caldera, which lies at the heart of Yellowstone National Park, is the tip of a huge volcano, which is in turn, bound to a hot spot.This is a fixed point within the earth's crust, where hot magma rises to the top. This accumulates below the earth's surface, thereby forming an underground magma chamber.aldera, which lies at the heart of Yellowstone National Park, is the tip of a huge volcano, which is in turn, bound to a hot spot. This is a fixed point within the earth's crust, where hot magma rises to the top.
Share to: A caldera is a large crater, up to 50 kilometers, that can form when the summit or side of a volcano collapses into the magma chamber during of after an explosion. A crater is â¦ an indentation, only up to 1 kilometer in diameter, that forms around the central vent at the summit of a volcano.The main difference is size. caldera is a large depression in a volcano. Most calderas form in one of two ways: by collapse of the top of a composite volcano after the magma chamber is drained. 19 people found this useful.