- Cave | Definition, Formation, Types, Facts | Britannica
Cave, natural opening in the earth large enough for human exploration Such a cavity is formed in many types of rock and by many processes The largest and most common caves are those formed by chemical reaction between circulating groundwater and bedrock composed of limestone or dolomite
- Top 17 Most Amazing Caves and Caverns in the USA
Explore the most incredible caves and caverns in the United States offering stunning views of the natural rock formations beneath the earth If you are into cave exploration or spelunking as part of your tourist adventure, here are some of the caves to visit in the United States
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