Lewisburg is a city in Greenbrier County, West Virginia, United States. The population was 3,830 at the 2010 census. It is the county seat of Greenbrier County.
The Natural Bridge Caverns are the largest known commercial caverns in the U.S. state of Texas. The name is derived from the 60 ft natural limestone slab bridge that spans the amphitheater setting of the cavern's entrance. The span was left suspended when a sinkhole collapsed below it.
A speleothem is a geological formation by mineral deposits that accumulate over time in natural caves. Speleothems most commonly form in calcareous caves due to carbonate dissolution reactions. They can take a variety of forms, depending on their depositional history and environment. Their chemical composition, gradual growth, and preservation in caves make them useful paleoclimatic proxies.
Kartchner Caverns State Park is a state park of Arizona, United States, featuring a show cave with 2.4 miles (3.9 km) of passages. The park is located 9 miles (14 km) south of the town of Benson and west of the north-flowing San Pedro River. Long hidden from view, the caverns were discovered in 1974 by local cavers, assisted by state biologist Erick Campbell who helped in its preservation.
Luray Caverns, originally called Luray Cave, is a cave just west of Luray, Virginia, United States, which has drawn many visitors since its discovery in 1878. The cavern system is generously adorned with speleothems such as columns, mud flows, stalactites, stalagmites, flowstone, and mirrored pools. The caverns are perhaps best known for the Great Stalacpipe Organ, a lithophone made from solenoid-fired strikers that tap stalactites of various sizes to produce tones similar to those of xylophones, tuning forks, or bells.
Cathedral Caverns State Park is a publicly owned recreation area and natural history preserve located in Kennamer Cove, Alabama, approximately 5 miles (8.0 km) northeast of Grant and 7 miles (11 km) southeast of Woodville in Marshall County. The park's main feature, first known as Bats Cave, was developed as a tourist attraction in the 1950s. Cathedral Caverns was declared a National Natural Landmark in 1972 and opened as a state park in 2000.
The Greenbrier River is a tributary of the New River, 162 miles (261 km) long, in southeastern West Virginia, in the United States. Via the New, Kanawha and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of 1,656 square miles (4,290 km2). It is one of the longest rivers in West Virginia.
Craighead Caverns is an extensive cave system located in between Sweetwater and Madisonville, Tennessee. It is best known for containing the United States' largest and the world's second largest non-subglacial underground lake, The Lost Sea. In addition to the lake, the caverns contain an abundance of crystal clusters called anthodites, stalactites, stalagmites, and a waterfall.
Marengo Cave is a privately owned cave located in Marengo, Indiana. One of only four show caves in Indiana, public tours of the cave have been given since 1883. Tours commenced just days after the cave's discovery by two school children. The cave was designated as a National Natural Landmark in 1984.
Illinois Caverns is a state natural area in the New Design Precinct of Monroe County, Illinois. It features Illinois Caverns which is alternatively known as Mammoth Cave of Illinois. Illinois Caverns is the second-largest cave in Illinois and has more than 9.6 km of passages. The cave has a constant temperature of 58 °F (14 °C), and portions flood during wet weather. Passages can be 20 feet (6.1 m) high and just as wide. It is located off Illinois Route 3, south of Waterloo, near the unincorporated community of Burksville.
Cumberland Caverns is a national natural landmark and show cave located in McMinnville, Tennessee. It is the second longest cave in Tennessee and makes the list of longest caves in the United States and in the world.
Black Chasm Cavern is a cave in the hamlet of Volcano in Amador County, California.
Carlsbad Caverns National Park is an American national park in the Guadalupe Mountains of southeastern New Mexico. The primary attraction of the park is the show cave, Carlsbad Cavern. Visitors to the cave can hike in on their own via the natural entrance or take an elevator from the visitor center.
Germany Valley is a scenic upland valley high in the Allegheny Mountains of eastern West Virginia originally settled by German farmers in the mid-18th century. It is today a part of the Spruce Knob-Seneca Rocks National Recreation Area of the Monongahela National Forest, although much ownership of the Valley remains in private hands.
Grand Caverns, formerly known as Weyer's Cave, is located in the central Shenandoah Valley in the town of Grottoes, Virginia, United States. A limestone cavern, it claims the distinction of being America's oldest show cave, in operation since 1806.
Organ Cave is a large and historic cave in Greenbrier County, West Virginia, USA. The surrounding community takes its name from the cave.
The Greenbrier River Watershed Association (GRWA) is one of the oldest watershed associations in the state of West Virginia, founded in 1990. It has supported the creation of other watershed associations throughout the state and maintains a policy of "upstream courtesy" and "downstream courtesy" with its neighbors.
The Metro / Te Ananui Caves are a maze of limestone caves formed by the underground capture of Ananui Creek, a tributary of the Waitakere or Nile River. The caves are located in the Paparoa National Park in New Zealand, managed by the Department of Conservation. Parts of the cave system are accessible by cave tours and rafting, operated by a commercial tour operator out of Charleston.
