In 1895, Mackinac National Park became the first national park to be abolished. It would not be the last. More than two dozen other sites or areas with independent identities have been pruned from the National Park System.
pruning the parks
The National Park Service administered the White Plains National Battlefield Site for several decades, but no national park materialized there and the property was eventually delisted.
Though few people seem to know or care, Michigan's long-ago abolished Mackinac National Park was America's second national park. Yellowstone got there first, but not by much.
Proclaimed in 1908, Montana's Lewis and Clark Cavern National Monument never could muster get the monetary support needed to develop and operate it as a viable national park. Congress abolished it in 1937 and it subsequently became Montana's first state park.
On July 30, 1956, Verendrye National Monument was delisted from the National Park System and transferred to the state of North Dakota. Congress decided that the claim of historical significance on which the 1917 national monument proclamation had been based was spurious.
California's Shasta Lake Recreation Area was a National Park System property for only three years before it was transferred to the Forest Service on July 1, 1948. The Forest Service now administers the lake as a component of Shasta-Trinity National Forest and Whiskeytown-Shasta-Trinity National Recreation Area.
Lake Texoma is a hugely popular flatwater playground on the Texas-Oklahoma border. It was once, albeit briefly, a national park.
Using authority granted by Congress on April 27, 1904, President Theodore Roosevelt proclaimed Sullys Hill Park, a hilly tract of woods and wetlands in North Dakota that was named for a hill that was named for a general who didn’t show up. The park, which turned out to be pretty much of a no-show too, was delisted in 1931 and re-purposed as a wildlife refuge.
On March 17, 1976, Congress corrected a 70-year old mistake by de-listing Platt National Park and folding the property into Chickasaw National Recreation Area.