Amazing! Freak of nature ice disk appears on the Snake River in Eastern Idaho!
The ice disk is a rare miracle of nature! This was spotted while driving over a US-Highway 20 bridge near Yellowstone Bear World on 1/22/2014.
http://en.wikipedia.org/wiki/I... states:
Ice discs form on the outer bends in a river where the accelerating water creates a force called 'rotational shear', which breaks off a chunk of ice and twists it around. As the disc rotates, it grinds against surrounding ice — smoothing into a circle.
How neat is that?!
Originally collected by
fetching...
(
less)