when was great sand dunes national park established
Great Sand Dunes National Park and Preserve Great Sand Dunes National Park and Preserve is a national park that conserves an area of large sand dunes up to 750 feet (229 m) tall[4] on the eastern edge of the San Luis Valley, and an adjacent national preserve located in the Sangre de Cristo Range, in south-central Colorado, United States.[5] The park was originally designated Great Sand Dunes National Monument on March 17, 1932 by President Herbert Hoover. The original boundaries protected an area of 35,528 acres (55.5 sq mi; 143.8 km2).[6] A boundary change and redesignation as a national park and preserve was authorized on November 22, 2000 and then established by an act of Congress on September 24, 2004.[2] The park encompasses 107,342 acres (167.7 sq mi; 434.4 km2) while the preserve protects an additional 41,686 acres (65.1 sq mi; 168.7 km2) for a total of 149,028 acres (232.9 sq mi; 603.1 km2).[1] The recreational visitor total was 486,935 in 2017, about 25% more than the 388,308 visitors of 2016.[3]
Joshua Tree National Park On August 10, 1936, after Minerva Hoyt and others persuaded the state and federal governments to protect the area, President Franklin D. Roosevelt used the power of the 1906 Antiquities Act to establish Joshua Tree National Monument. It protected about 825,000 acres (334,000 ha).[18] In 1950, the size of the park was reduced by about 290,000 acres to open the land to more mining.[19] The park was elevated to a National Park on October 31, 1994, by the Desert Protection Act, which also added 234,000 acres to the park.[20]