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Eden, NY (WGRZ) --A mystery of sorts has unfolded in Peggy Gervase's back yard.

As she looked out from the deck of her home on Friday, Peggy spotted what appearedto be a series of concentric circles thathad opened in the snow covering a nearby pond. It almost resembled theunusual phenomena known as crop circles. But again, this occurred on thesurface of a pond.

Gervase posted pictures onFacebook andwith a link on the WGRZFacebook page, there were nearly 40,000 views withmore than 200comments. They contained explanations of what may have caused it. Theyincluded everything from underground springs to melting ice,meteors,methane gas, gas expelled by fish and ducks, and -- of course -- aliens.

Gervase toldWGRZ she did not see any strange lights in the skies that night and for now, the pond circles remain a mystery.

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