'Mima mounds' formed by pocket gophers, researchers believe
(Newser) -
Since 1841, many have wondered what might have created "Mima mounds," the mysterious (and quite numerous) large, ancient bumps emerging from the ground in Washington state's Mima Prairie. Earthquakes? Floods? Glaciers? Aliens? Nope. Most likely, it was ... gophers. Researchers think they've finally figured it out, LiveScience...