Researchers seek to find Old Faithful’s underground plumbing


BILLINGS, Mont. (AP) — Scientists from the U.S. and Denmark are seeking to map out the plumbing system hidden inside the earth’s crust that’s responsible for the famous Old Faithful geyser and other hydrothermal features at Yellowstone National Park.

Throughout November the research team will conduct flights over the park using a giant, hoop-shaped electromagnetic system suspended from a helicopter. The device acts like an X-ray to determine where and how hot water flows beneath the surface.

The team also hopes to gain insights into the infrequent but sometimes massive hydrothermal explosions that occur in the park, said lead scientist Carol Finn with the U.S. Geological Survey.

One such explosions, or possibly multiple explosions, that occurred roughly 13,800 years ago left a crater that measures 1-1/2 miles (2.6 km) across beneath at…



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