Mammoth 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.
The Cumberland Gap National Historical Park is a United States National Historical Park located at the border between Kentucky, Tennessee, and Virginia, centered on the Cumberland Gap, a natural break in the Appalachian Mountains.
Hueston Woods State Park is a state park located in Butler and Preble counties of the U.S. state of Ohio, about five miles (8 km) northeast of Oxford in the southwestern part of the state. The park lies in Oxford Township, Butler County, and Israel Township, Preble County. It has nearly 3,000 acres (1,200 ha), including a man-made lake of 625 acres (253 ha). The park's beech-maple climax forest has been designated a National Natural Landmark.
Warren Woods State Park is a 311-acre (1.26 km2) nature preserve and public recreation area in Berrien County, Michigan, near the town of Three Oaks. The state park is leased by private owners to the state of Michigan.
Ha Ha Tonka State Park is a public recreation area encompassing over 3,700 acres (1,500 ha) on the Niangua arm of the Lake of the Ozarks, about five miles south of Camdenton, Missouri, in the United States. The state park's most notable feature is the ruins of Ha Ha Tonka, an early 20th-century stone mansion that was modeled after European castles of the 16th century.
Johnson's Shut-Ins State Park is a public recreation area covering 8,781 acres (3,554 ha) on the East Fork Black River in Reynolds County, Missouri. The state park is jointly administered with adjoining Taum Sauk Mountain State Park, and together the two parks cover more than sixteen thousand acres in the St. Francois Mountains region of the Missouri Ozarks.
Lake Tahoe–Nevada State Park is a state park comprising multiple management units and public recreation areas on the northeast shores of Lake Tahoe in the U.S. state of Nevada. The park covers approximately 14,301 acres (5,787 ha). The Marlette Lake Water System, which is listed on the National Register of Historic Places and as a National Historic Civil Engineering Landmark, lies within park boundaries.
Thousand Hills State Park is a public recreation area covering some 3,000 acres (1,200 ha) two miles (3.2 km) west of Kirksville in Adair County, Missouri. The state park features 703-acre (284 ha) Forest Lake and Native American petroglyphs.
Hawn State Park is a public recreation area located 14 miles (23 km) southwest of Ste. Genevieve, Missouri. The state park's nearly 5,000 acres (2,000 ha) include three state-designated natural areas: Pickle Creek, LaMotte Sandstone Barrens, and Botkins Pine Woods. Orchid Valley is also considered part of Hawn State Park, but is not connected to the rest of the park and is not open to the public.
Babler State Park is a state-managed public recreation area located in the northwest section of the city of Wildwood, Missouri. A large bronze statue of Dr. Babler greets park visitors. The state park's 2,441 acres (988 ha) offer opportunities for hiking, picnicking, bicycling, horseback riding, and camping. The park was added to the National Register of Historic Places in 1985.
Sam A. Baker State Park is a public recreation area encompassing 5,323 acres (2,154 ha) in the Saint Francois Mountains region of the Missouri Ozarks. The state park offers fishing, canoeing, swimming, camping, and trails for hiking and horseback riding. The visitor and nature center is housed in a historic building that was originally constructed as a stable in 1934.
Big Oak Tree State Park is a state-owned nature preserve with recreational features encompassing 1,029 acres (416 ha) in East Prairie, Missouri, United States. The state park was established in a large expanse of drained cropland in 1938 to protect some of the largest trees in the state and in the nation. The park was declared a National Natural Landmark in May 1986, recognized as a rare, untouched wet-mesic bottomland hardwood forest in the Mississippi Alluvial Plain portion of the Gulf Coastal Plain.
Trail of Tears State Park is a public recreation area covering 3,415 acres (1,382 ha) bordering the Mississippi River in Cape Girardeau County, Missouri. The state park stands as a memorial to those Cherokee Native Americans who died on the Cherokee Trail of Tears. The park's interpretive center features exhibits about the Trail of Tears as well as displays and specimens of local wildlife. An archaeological site in the park was added to the National Register of Historic Places in 1970.
Watkins Mill in Lawson, Missouri, United States, is a preserved woolen mill dating to the mid-19th century. The mill is protected as Watkins Woolen Mill State Historic Site, which preserve its machinery and business records in addition to the building itself. It was designated a National Historic Landmark and added to the National Register of Historic Places in 1966 in recognition for its remarkable state of preservation. The historic site is the centerpiece of Watkins Mill State Park, which is managed by the Missouri Department of Natural Resources.
Greenbrier State Park is a public recreation area located on South Mountain, three miles (4.8 km) northeast of Boonsboro in Washington County, Maryland, USA. The state park has camping, hiking trails, and a 42-acre (17 ha) man-made lake. It is managed by the Maryland Department of Natural Resources.
Graham Cave State Park is a state park in the U.S. state of Missouri consisting of 369 acres (149 ha) located in Montgomery County. The park's namesake, Graham Cave, is a cave in St. Peter sandstone with an entrance 120 feet (37 m) wide and 60 feet (18 m) high and an extent of about 100 feet (30 m) into the hillside. The cave protects an historically important Pre-Columbian archaeological site dating back to as early as 10,000 years ago. Visitors are allowed up to the entrance of the cave where interpretive signs point out significant discoveries. The park includes the 82-acre (33 ha) Graham Cave Glades Natural Area which protects an area of sandstone and dolomite glades with a rich diversity of glade species. The park is adjacent to Interstate 70 from which the entrance to the cave can be glimpsed during foliage-free months.
Long Branch State Park is a public recreation area occupying 1,828 acres (740 ha) adjacent to the Long Branch Reservoir in Macon County, Missouri. The state park consists of three units located some two miles west of Macon, Missouri on U.S. Highway 36.
Rock Bridge Memorial State Park is a geological preserve and public recreation area encompassing 2,273 acres (920 ha), five miles (8.0 km) south of Columbia in Boone County, Missouri off of Missouri Route 163.
St. Francois State Park is a public recreation area occupying 2,735 acres (1,107 ha) of land five miles (8.0 km) north of Bonne Terre in St. Francois County, Missouri. The state park features a campground, trails for hiking and horseback riding, and fishing on the Big River. The 49-acre (20 ha) Coonville Creek Natural Area, made up of Coonville Creek and its narrow valley, is found within the park's boundaries.
Wallace State Park is a public recreation area located seven miles (11 km) south of Cameron in Clinton County, Missouri. The state park's 502 acres (203 ha) encompass a six-acre (2.4 ha) lake, Lake Allaman, for swimming, fishing, and boating, hiking trails, picnicking facilities, and a campground.
