About 32,000 people.
Carlsbad is a warm southern city famous for the giant underground caves right outside of town. It sits along the Pecos River in the sunny desert.
You can explore the huge Carlsbad Caverns, watch thousands of bats fly out at dusk, and paddle boats on the river right in town.
Carlsbad Caverns is a giant cave world hidden under the desert, with rooms so big you could fit whole buildings inside. You ride an elevator deep underground to see towering stone shapes.
Every summer evening hundreds of thousands of bats swirl out of the cave to hunt bugs, filling the sky like a dark ribbon. Visitors sit and watch this incredible natural show for free.