Carlsbad Caverns National Park is a United States National Park in the Guadalupe Mountains of southeastern New Mexico. The primary attraction of the park is the show cave, Carlsbad Cavern. Carlsbad Caverns National Park is open every day of the year except Thanksgiving, Christmas, and New Year's Day. Visitors to the cave can hike in on their own via the natural entrance or take an elevator from the visitor center. - Source: Wikipedia