Devils Tower
NPS Photo
Devils Tower was proclaimed America’s first national monument in 1906. Theodore Roosevelt decided the approximately 1,347 acre region located in Wyoming had to be preserved. Most geologists believe Devils Tower is an igneous intrusion where the sedimentary rock around it has eroded away. Children can learn more at: Devils Tower.
Arches National Park in Utah was created in 1971. In 1929 the wind-eroded rock formations were declared a national monument. Then it became a national park. Children can visit a website at: