The Southwest’s super-volcano!

Say “supervolcano” and “national park” and, naturally, “Yellowstone!” springs to mind. But there’s another remarkable crater in the national park system–Valles Caldera National Preserve in northern New Mexico.

The 89,000-acre site hasbeen a federal reserve for a long time butjust over a month ago the National Park Service took over its management. The 13-mile-wide depression is what remains of a cataclysmic volcanic eruption roughly 1.25 million years ago and it is one of the world’s largest...