Usually, its from the freeze/melt cycle forming giant blocks of ice somewhere on the road … then the plow pushing a giant chunk right onto your driveway. Best time for this is usually at the end of winter when it’s constantly thawing then refreezing at night.
Sounds like some snow melted and solidified again overnight.
Usually, its from the freeze/melt cycle forming giant blocks of ice somewhere on the road … then the plow pushing a giant chunk right onto your driveway. Best time for this is usually at the end of winter when it’s constantly thawing then refreezing at night.