Slaughter Canyon Cave Trail is a 1 mile lightly trafficked out and back trail located near Carlsbad, NM that features beautiful wild flowers and is rated as moderate. The trail is primarily used for hiking, walking, nature trips, and birding and is accessible year-round.
Slaughter Canyon Cave is only accessible with a guide from the National Park Service. Reservations must be made in advance through recreation.gov, and the cost is $30 per person. The trail to the cave is 0.5 miles one-way, and the trail inside the cave varies but typically runs about a mile depending on which parts of the cave the rangers wish to show you. More information is available on the National Park Service's website here: https://www.nps.gov/cave/planyourvisit/slaughter_canyon_cave_tour.htm
Slaughter Canyon Cave is a ranger-guided hike in Carlsbad Caverns National Park. It is a separate from the main cavern and is maintained in a more primitive state, without lighting or paved trails. Slots on the tour need to be reserved in advance through recreation.gov. It offers a quiet alternative to the sometimes crowded main cavern.