Towering mountains, glaciers and icy-blue waters meet at Kenai Fjords National Park in Alaska. Captivating scenery and the chance to see wildlife like bears and whales await adventurous travelers, who can explore the park by boat, kayak, or hiking the iconic Harding Icefield Trail. The park is named for fjords, or long, narrow valleys with steep sides carved by glaciers. Photo by National Park Service. Posted on Tumblr by the US Department of the Interior, 6/12/16.