There are over 600 acres of these approximately 8 foot by 30 foot mounds that were covered by grasses, a few saplings and many dainty wildflowers when we were there yesterday. These Mima Mounds may have been caused by earthquakes, volcanic action, glaciers or gophers - yes, burrowing gophers is one of the many theories. To learn more about this mystery, read this article about western Washington's Mima Mounds.
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