Folks in northern Michigan are getting to enjoy a phenomenon normally only seen in glaciers: blue ice, piled up in the Straits of Mackinac.
원문출처 : https://www.cnn.com/travel/article/michigan-blue-ice-trnd/index.html
원문출처 : https://www.cnn.com/travel/article/michigan-blue-ice-trnd/index.html