Ключевые слова: america, american, american flag, american revolution, arch, archway, army, camp, clouds, continental, continental army, flag, forge, george, george washington, grass, green, historic, landmark, landscape, memorial, military, monument, national, national memorial arch, national park, nature, nobody, outdoors, park, patriotic, pennsylvania, philadelphia, revolution, revolutionary, revolutionary war, scenic, sky, spring, states, sunrise, trees, united, united states, valley, valley forge, valley forge national historical park, walkway, war, washington,