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Bull Shoals Caverns is a limestone cavern located in Bull Shoals, Arkansas. The caverns were created approximately 350 million years ago, during the Ordovician period and were carved out by water method. The caverns were formed by water seeping into the cracks of the rocks, gradually enlarging the cracks and dissolving the surrounding rocks.
At the time of the Cambrian explosion, as multi-cellular became commonplace, Arkansas was primarily flooded by rivers and a shallow marine environment.In the Ozark region, calcareous, quartzose sand and clay deposited, while the Ouachita area witnessed the formation of alternating layers of sand, clay, silt and small amounts of lime mud.
Groundwater accounts for over 60% of water use in Arkansas, and shallow aquifers providing high quality groundwater can be found throughout the state. In many upland regions of Arkansas, surface water interacts with groundwater via karst topography common to the Ozarks and Ouachitas. Groundwater monitoring is subdivided into twelve areas.
Today Mystic Caverns and Crystal Dome are managed by Steve Rush, and guided tours, which include both caves, are conducted every 35 to 45 minutes and last about an hour and twenty minutes. In late 2008, Rush put the caverns up for auction on eBay. The minimum bid was first set at $1.2 million, but later reduced to $899,900. [4]
The "Giant Flowstone" in Blanchard Springs Caverns, seen on the Discovery Tour. Blanchard Springs Caverns is a cave system located in the Ozark–St. Francis National Forest in Stone County in northern Arkansas, USA, 2 miles (3.2 km) off Highway 14 a short distance north of Mountain View. [1]
Fracture, or joint occur when groundwater running along an impermeable layer of rock meets a crack (fracture) or joint in the rock. [4] Tubular springs occur when groundwater flows from circular fissures such as those found in caverns (solution tubular springs) or lava tubular springs found in lava tube caves. [5] [6]
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Cosmic cavern hosts a regular tourist tour as well as a "wild" cave tour. The "wild" cave tour takes visitors into the undeveloped parts of the cave where the most spectacular formations are found. The gift shop has a small museum on the second floor, highlighting some of the cave's history.