The term Montana National Park is represented by the crossword solution 'GLACIER, ' which is a seven-letter word. GLACIER National Park is located in the U.S. state of Montana and is known for its stunning glaciers, alpine meadows, and rugged mountains. The park is home to over 130 named lakes, more than 1, 000 different species of plants, and hundreds of species of animals. It is also a popular destination for hikers, campers, and outdoor enthusiasts.