Ключевые слова: american, assembly, blue, boundary, canyon, crest, culture, earth, eurasian, field, geology, heritage, hill, iceland, ingvellir, island, lake, landmark, meadow, mount, mountain, national, natural, north, outstanding, park, place, plate, ridge, rift, river, rock, sky, stone, tectonic, thingvellir, travel, trip, unique, valley, weald, world,