Capulin Volcano National Monument offers visitors the rare opportunity to walk inside a volcanic crater. A 2-mile road spirals up from the visitor center more than 600 feet to the crater of the 8,182-foot peak, where two self-guided trails leave from the parking area: an energetic and spectacular 1-mile hike around the crater rim and a 100-foot descent into the crater to the ancient volcanic vent. One of the most interesting features here is the symmetry of the main cinder cone. The volcano was last active about 60,000 years ago, when it sent out the last of four lava flows. Scientists consider it dormant, with a potential for future activity, rather than extinct.

Because of the elevation, wear light jackets in the summer and layers during the rest of the year. Be aware that the road up to the crater rim is frequently closed due to weather conditions. Plan on spending 1 to 3 hours at the volcano; a more in-depth exploration could take several days, but camping is not permitted.

A short nature trail behind the center introduces plant and animal life of the area and is great for kids and accessible to people with disabilities. A longer hike starts at park headquarters up to the parking lot at the crater rim. The crater rim offers magnificent panoramic views of the surrounding landscape, the Sangre de Cristo Mountains, and, on clear days, portions of four contiguous states: Kansas, Texas, Colorado, and Oklahoma. During the summer, the volcano attracts swarms of ladybird beetles (ladybugs).