The Valles Caldera National Preserve (http://www.vallescaldera.gov/) VCNP for short is a new 2000 and unusual unit of the United States national park system in the Jemez Mountains of north central New Mexico. It preserves a huge volcanic structure of great scenic and scientific value, under a novel, pioneering arrangement that allows it also to function as a working, money-making cattle ranch. Facilities for the visitor are still being developed and are undergoing rapid change.
