10 Best Places To Visit in USA in May

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7. Carlsbad Caverns National Park, NM

Air and Water Quality: 48

Pollution: 4

Ranking 7th in our list of 30 best places to visit in USA in May is UNESCO World Heritage Site Carlsbad Caverns National Park in New Mexico. Carlsbad Cavern is a massive underground system of over 100 limestone caves created over 4 million years ago and is located within the national park. Carlsbad Caverns is one of the world’s best-preserved and most open cave systems for scientific research and public viewing. As of April 27, New Mexico administered 86.48% of 6,771,230 doses distributed in the state.

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