This is a geological marvel located in Wyoming, USA. It is the largest active supervolcano in North America and is part of the Yellowstone National Park. The caldera is a huge volcanic crater that was formed by a massive eruption that occurred over 640,000 years ago. It is
The Yellowstone Caldera, also known as the Yellowstone Plateau Volcanic Field, is a Quaternary caldera complex and volcanic plateau spanning parts of Wyoming, Idaho, and Montana. It is driven by the Yellowstone hotspot and is largely within Yellowstone National Park. The field comprises four overlapping calderas, multiple lava domes, resurgent domes, crater lakes, and numerous bimodal lavas and tuffs of basaltic and rhyolitic composition, originally covering about 17,000 km2 (6,600 mi2).