on Convict Lake,

in the Sierra Nevada Mountains,

in California. (Tap to enlarge).

These fascinating patterns of both straight lines/angles,

and wiggly-squiggles, are created by ice layers melting, moving, cracking and refreezing, over and over again.

They remind me of the patterns on Scribbly Gum trees in Australia.

Tap to enlarge and see if you can spot the distant skaters.

These learners were closer.

Cheers to you from the Sierras in winter~