US Department of the Interior @Interior
Centuries of wave action, freezing and thawing have sculpted shorelines throughout Apostle Islands National Lakeshore. People come to "The Jewels of Lake Superior" in summer and winter to visit the sea caves and witness Lake Superior's ever-changing handiwork. Photo by M. DeWitt https://t.co/CygtlgycEu — PolitiTweet.org