my little soap box. this stuff is very dangerous. rare but dangerous. fresh powder over glare ice / aka smooth flat ice
the powder packs into the tread lifting you off the studs. then down you go
so I switched to more aggressive Schwalbe Spiker Pro studded tires with deeper & wider voids which don't block up like the Schwalbe Winter Marathons
unmaintained forest roads get frozen precipitation, which then melts & refreezes very smooth. then the new powder collects right on top of that. the maintained roads get plowed, etc
fast forward to 8:15