Were mystery 8ft prairie pyramids built by GOPHERS?
Mima mounds - massive, grass-covered round or oval earth pimples - were first discovered in 1841 in Western Washington state in a 630-acre prairie.
In the 19th century, explorers came up with a theory that the mounds dating back thousands of years are ancient Native American burial sites - but no human remains were ever found inside the loosely packed structures.
Nature's pyramids: Geologists in California have proposed theory suggesting that pocket gophers are responsible for building these 8-foot-tall, 30-foot-wide hills known as Mima mounds
Struggling to explain the existence of millions of Mima mounds peppering open fields in Washington, Oregon and Idaho, experts and amateur geology enthusiasts have come up with a plethora of possible origin stories ranging from natural disasters like earthquakes and floods to aliens.
However, a recent study spearheaded by geologist Manny Gabet, of San Jose State University in California, has created a computer model showing how generations of pocket gophers measuring up to 12 inches in length and weighing only a few hundreds grams could plausibly construct a Mima mound over 500-700 years - one handful of soil and pebbles at a time.
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A new twist on an old mystery may finally settle the debate over the origin of Mima mounds, which bulge out of the ground like enormous, grass-covered bubble wrap. Mima mounds (sounds like dime-a) were named in 1841, when a vast pimply prairie (the Mima Prairie) was discovered in western Washington during the United States Exploring Expedition.
A new computer model shows how over 500-700 years, generations of pocket gophers - so named because of their large cheek pouches - could construct a Mima mound by adding handfuls of soil and pebbles Struggling to explain the existence of millions of Mima mounds peppering open fields in Washington, Oregon and Idaho, experts and amateur geology...
( via dailym.ai )
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