In what European country, whose national flag is square, are ski lifts open this season (though they're closed in surrounding countries)?

Switzerland

Explanation:

Switzerland is the only European country that has the square flag. In addition, Switzerland receives a large number of visitors at this time of year, due to its equi stations that will have the telephones open this season as a way of trying to minimize the economic impacts caused recently by the pandemic.

answer; form new memories;

answer; necessity-driven;