A rounded patch of rotating ice made the Sheyenne River look unexpectedly geometric. George Loegering’s account describes the North Dakota sighting and an estimated diameter of about fifty-five feet.
A circle is not a sphere
The feature is a flat, floating arrangement on the water, not a ball. The original report also described loose pieces collected in the rotation, so calling it one thick solid disc would erase an important detail.
Follow the river around the edge
Open water makes the boundary and movement easier to see. The archive discusses an eddy as part of the explanation, but the photographs do not establish the ice’s strength. Its appeal is the surprisingly orderly shape within a naturally moving river.
Explore more: lake ice driven onto a shoreline; rounded ice pieces near Lake Michigan.
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