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,
Pang Sida National Park Pang Sida National Park Pang Sida National Park is a national park in the Sankamphaeng Range, covering 844 square kilometres in the eastern Thai province of Sa Kaeo. It is 28 kilometres north of Sa Kaeo City, the capital of the province. Together with Khao Yai National Park, Thap Lan National Park, Ta Phraya National Park and the Dong Yai Wildlife Sanctuary, it constitutes a part of the Dong Phayayen Forest Complex UNESCO World Heritage Site, covering in total around 6,100 square kilometers. One of the highlights of the park is Pang Sida waterfall. From information collected in 2000 the