Parts of the Yellowstone Caldera are swelling rapidly. The Sour Creek Dome just east of Haden Valley is rising 6 centimeters a year as (likely) magma flows in under it.
Story in the Billings Gazette. By Mike Stark.
Yellowstone domes rising at 'really pronounced' pace
Author
Dr. Ralph Maughan is professor emeritus of political science at Idaho State University. He was a Western Watersheds Project Board Member off and on for many years, and was also its President for several years. For a long time he produced Ralph Maughan’s Wolf Report. He was a founder of the Greater Yellowstone Coalition. He and Jackie Johnson Maughan wrote three editions of “Hiking Idaho.” He also wrote “Beyond the Tetons” and “Backpacking Wyoming’s Teton and Washakie Wilderness.” He created and is the administrator of The Wildlife News.