<P> Administered by the National Park Service , the area was originally named a National Monument on April 12 , 1929 . It was redesignated as a National Park on November 12 , 1971 . </P>
<P> Administered by the National Park Service , the area was originally named a National Monument on April 12 , 1929 . It was redesignated as a National Park on November 12 , 1971 . </P>
when did arches national park became a national park
when did arches national park became a national park
April 12 , 1929
April 12 , 1929