Author Image: Megan Johnson

Megan Johnson

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<p>- Recreational visits in 2020: 183,835
- Percent of total national park visits: .27%</p>

<p>Located in southern New Mexico, Carlsbad Caverns National Park's 119 caves were born when sulfuric acid dissolved limestone millions of years ago, leaving behind a treasure trove of caverns. The Big Room in Carlsbad Cavern is the largest single cave chamber by volume in North America and takes an hour and a half to cross, according to the National Park Service. Birders from around the globe flock to Rattlesnake Spring to see some of the 300 documented bird species.</p>
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