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Costilla County, couched within the San Luis Valley in south-central Colorado, stretches over almost 1,227 square miles. With the arrival of Europeans in the late 1600s, it became formally established… Read more »
Costilla County, couched within the San Luis Valley in south-central Colorado, stretches over almost 1,227 square miles. With the arrival of Europeans in the late 1600s, it became formally established… Read more »