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High Quality Content by WIKIPEDIA articles! Valles Caldera (or Jemez Caldera), is a 12-mile-wide collapsed volcanic caldera in the Jemez Mountains of northern New Mexico. Within its caldera, Valle Grande is the largest valle (grass valley) and the only one with a paved road. Until recently, the Valles Caldera was part of the Baca Ranch. The Dunigan family sold the entire surface estate of 95,000 acres (380 km2) and seven-eighths of the geothermal mineral estate to the federal government. On July 25, 2000, the Valles Caldera Preservation Act, 16 U.S.C. Sections 698v-698v-10, created the Valles…mehr

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High Quality Content by WIKIPEDIA articles! Valles Caldera (or Jemez Caldera), is a 12-mile-wide collapsed volcanic caldera in the Jemez Mountains of northern New Mexico. Within its caldera, Valle Grande is the largest valle (grass valley) and the only one with a paved road. Until recently, the Valles Caldera was part of the Baca Ranch. The Dunigan family sold the entire surface estate of 95,000 acres (380 km2) and seven-eighths of the geothermal mineral estate to the federal government. On July 25, 2000, the Valles Caldera Preservation Act, 16 U.S.C. Sections 698v-698v-10, created the Valles Caldera National Preserve. The careful husbandry of the Baca Ranch by its private owners, including selective logging, limited grazing and hunting, and the use of prescribed fire, had preserved a mix of healthy range and timber land with significant biodiversity, including New Mexico's largest herd of elk, and served as a model for self-sustaining land development and use.