12×18 Poster of the Night Scene at Dry Tortugas National Park.
Starry night skies and natural darkness are important components of national parks, which hold some of the last remaining harbors of darkness and provide an excellent opportunity for the public to experience this endangered resource. Dry Tortugas National Park is dedicated to protecting and sharing its nighttime skies for the enjoyment of current and future generations.
Natural lightscapes are critical for nighttime scenery, such as viewing a starry sky, but also are critical for maintaining nocturnal habitat. Many wildlife species rely on natural patterns of light and dark for navigation, to cue behaviors, or to hide from predators.