Is yellowstone the only super volcano??
No, there are several around the world. Yellowstone is located in the Northwest Corner of Wyoming. The edges of Yellowstone National Park extend slightly into Montana and Idaho. Around the world there are several other volcanic areas that can be considered “supervolcanoes”- Long Valley in eastern California, Toba in Indonesia, and Taupo in New Zealand. Other “supervolcanoes” would likely include the large caldera volcanoes of Japan, Indonesia.