Lots and lots of snow fell in the tall mountains of Switzerland and France, making it hard for people to travel.
The town of Zermatt was covered in so much snow that everyone had to stay inside their houses to stay safe.
In Tignes, France, they had to close everything because of the snow; the mayor said avalanches were a big risk.
Many roads were closed, the power went out in lots of places, and phones didn't work; it was a really snowy mess!