Shenandoah National Park a result of differential erosion during the Cenozoic, although some post-Paleozoic tectonic activity occurred in the region. Legislation to create a national park in the Appalachian mountains was first introduced by new Virginia congressman Henry D. Flood in 1901, but despite the support of President Theodore Roosevelt, failed to pass. The first national park was Yellowstone, in Wyoming, Montana, and Idaho. It was signed into law in 1872. Yosemite National Park was created in 1890. When Congress created the National Park Service (NPS) in 1916, additional parks had maintained the western pattern (Crater Lake in 1902, Wind Cave in 1903,
George Washington Memorial Park (Jackson, Wyoming) added to the antler arches the same year. George Washington Memorial Park (Jackson, Wyoming) George Washington Memorial Park is located at the center of Jackson, Wyoming. More generally known as "Town Square", the park is notable for its elk-antler arches at each corner of the park, collected from the nearby National Elk Refuge by Boy Scouts and periodically rebuilt. The square originally existed as an open space in the center of town that was made into a park in 1934. The park center also contains a stone memorial to John Colter. The Town Square originated as an open space in