This national park contains a (*) geyser known for a very predictable eruption pattern.
A caldera in this location formed after a series of eruptions at Mesa Falls and Huckleberry Ridge, and contains a supervolcano named after this North American park. This national park contains a (*) geyser known for a very predictable eruption pattern. For ten points, name this protected area in Wyoming whose Old Faithful helped establish it as America's first national park.
A caldera in this location formed after a series of eruptions at Mesa Falls and Huckleberry Ridge, and contains a supervolcano named after this North American park.
Yellowstone National Park