|Air captured between strata in the ice|
It was quite eerie skating, as the ice was constantly cracking, making long, echoing sounds reverberating across the lake, occurring much more frequently than the cracks that happen later in the winter. A couple of times a crack went right underneath us; we could see it form, watching the leading edge move through the ice. Most of the cracks seemed to be occurring in the top two-inch layer.
We saw no animals other than other humans, but there were lots of fox and squirrel tracks in the snow near the shore.
With warm tempertures, no wind, full sunshine, and a clear blue sky, it was perhaps a once in lifetime experience. (Special thanks to Tom for the ice report!)