Carlsbad Cavern is a large limestone cave located in Carlsbad Caverns National Park in New Mexico. It features stunning rock formations, including stalactites and stalagmites, formed over millions of years. The cavern is famous for its vast chambers, with the largest, known as the Big Room, measuring 4,000 feet long and 255 feet high. Visitors can explore the cavern through guided tours or self-guided paths. The park is also home to a variety of wildlife, including bats, which can be seen during their seasonal migrations. Carlsbad Cavern is a UNESCO World Heritage Site, attracting nature lovers and adventure seekers alike.