WThe U.S. Interior Highlands is a mountainous region in the Central United States spanning northern and western Arkansas, southern Missouri, eastern Oklahoma, and extreme southeastern Kansas. The name is designated by the United States Geological Survey to refer to the combined subregions of the Ouachita Mountains south of the Arkansas River and the Ozark Plateaus north of the Arkansas. The U.S. Interior Highlands is one of few mountainous regions between the Appalachians and Rockies.
WBig Spring is one of the largest springs in the United States and the world. An enormous first magnitude spring, it rises at the base of a bluff on the west side of the Current River valley in the Missouri Ozarks. Located about four miles downstream from Van Buren, it is within the boundaries of the Ozark National Scenic Riverways, and its visitor facilities are managed by the National Park Service. It is a contributing resource to Big Spring Historic District, listed on the National Register of Historic Places in 1981.
WThe Buffalo River, located in Northern Arkansas, was the first National River to be designated in the United States. The Buffalo River is 153 miles (246 km) long. The lower 135 miles (217 km) flow within the boundaries of an area managed by the National Park Service, where the stream is designated the Buffalo National River. The river flows through Newton, Searcy, Marion, and Baxter Counties, from west to east. The river originates in the highest part of the Boston Mountains of the Ozarks, flows out onto the Springfield Plateau near the historic community of Erbie, and finally crosses a portion of the Salem Plateau just before joining the White River. The Park is home to the state's only elk herd. The upper section of the river in the Ozark National Forest is managed by the U.S. Forest Service and is designated as a National Scenic River and a National Wild River; that section is not part of the area managed as a park by the Park Service but is managed as a part of the Ozark National Forest.
WThe Eleven Point National Wild and Scenic River is a 44-mile (71 km) stretch of the spring-fed Eleven Point River in the Ozarks of southern Missouri set aside through eminent domain for preservation by Congress in 1968. The designated part of the river stretches from Thomasville to State Highway 142. The river was included in the original proposal for the Ozark National Scenic Riverways, but it was ultimately excluded when the Riverways were designated on the Current and Jacks Fork rivers in 1964.
WThe J.T. Nickel Family Nature and Wildlife Preserve, located in Cherokee County, Oklahoma is privately owned and managed by the Oklahoma Nature Conservancy. The preserve contains 17,000 acres (6,900 ha) of forest and grassland. Spring-fed creeks meander amid a rugged topography of steep slopes and narrow valleys harboring a mosaic of oak-hickory forest, lofty pine woodland, and a diverse mix of savanna, shrubland, and prairie. Elk have been reintroduced at the Preserve
WMammoth Spring is a large, first magnitude karst spring that arises in the Ozark Plateau within the state of Arkansas. It is the largest spring in Arkansas and the third-largest spring within the Ozark Plateau region behind Big Spring and Greer Spring. Mammoth Spring is the seventh-largest natural spring in the world.
WThe Ozark Mountain forests are a temperate broadleaf and mixed forests ecoregion of the central United States delineated by the World Wide Fund for Nature. The ecoregion covers an area of 23,900 square miles in northern Arkansas and eastern Oklahoma.
WThe Ozark National Scenic Riverways is a national park in the Ozarks of southern Missouri in the U.S..
WOriginally known as the Oklahoma Bat Caves National Wildlife Refuge, Ozark Plateau National Wildlife Refuge was established for the protection of endangered bats and their habitat. The refuge is made up of several parcels of land located in northeastern Oklahoma. These parcels contain numerous caves considered crucial for the bats' survival.
WThe Ozark Trail is a hiking, backpacking, and, in many places, biking and equestrian trail under construction in the Missouri Ozarks in the United States. It is intended to reach from St. Louis to Arkansas. Over 350 miles (563 km) of the trail have been completed as of 2008, and the estimated length when finished will be at least 500 miles (805 km). When joined to the Ozark Highlands Trail in Arkansas, the full hiking distance from end to end will be at least 700 miles (1,127 km), not including a large loop through the St. Francois Mountains in Missouri.
WThe Talimena Scenic Drive is a National Scenic Byway in southeastern Oklahoma and extreme western Arkansas spanning a 54.0-mile (86.9 km) stretch of Oklahoma State Highway 1 (SH-1) and Arkansas Highway 88 (AR 88) from Talihina, Oklahoma, to Mena, Arkansas.