Okama, Miyagi Prefecture
A famous crater lake located between Miyagi and Yamagata prefectures. Since it is located on a high mountain, the air is 4-5 degrees cooler than below. It is a good place to escape the heat in the middle of summer because the wind is very cool. I had the opportunity to go in August when the temperature was over 30 degrees nationwide, but on the top of Mt. Zao in Okama, the temperature was around 22 degrees, very cool and refreshing.
When talking about Zao, everyone might think of the Giant Ice Monster and ski slopes in winter. But in summer, it is beautiful and refreshing in another way.