My Site - The Difference Between National Parks And Monuments #1 Great Smoky Mountains NpClose to half of Virgin Islands National Park is underwater, inviting visitors to don a snorkel to explore what awaits underneath the park's floor. Mangrove shorelines and seagrass beds are teeming with marine life, and the park's various climbing trails additionally often lead to secluded places to swim and snorkel. South Carolina’s Congaree Natio Fri, 18 Sep 2020 18:57:34 UTC en