(1) A thin coating ice on rock or other exposed surfaces. Extremely slippery and usually invisible. Fun!
Might be caused by freezing fog or freezing drizzle, or melted ice that slowly re-freezes and solidifies as pure ice without air bubbles. And so on.
(2) A veneer of "black" (i.e., invisible) ice on rock. (In case you didn't get it the first time.)
Have anything worth adding? Then try sosayseff@gmail.com
Me? Never touch the stuff.
Etc...
so says eff: sporadic spurts of grade eff distraction
definitions: outdoor terms
fiyh: dave's little guide to ultralight backpacking stoves
boyb: dave's little guide to backpacks
snorpy bits: nibbling away at your sanity
last seen receding: missives from a certain mobile homer
noseyjoe: purposefully poking my proboscis into technicals