Alamosa County is located in the scenic San Luis Valley of South Central Colorado. The valley is the largest of Colorado’s intermountain basins and is roughly shaped like an upside down horseshoe. It is bounded on the west by the San Juan Mountains, on the east by the Sangre de Cristo Mountains, and on the north by the joinder of these two mountain ranges, both studded with  peaks rising to 13,000 and 14,000 feet. The valley floor stretches about 100 miles from north to south and 65 miles from east to west. Encompassing some 8,100 square miles, the valley varies from about 7,000 to 8,000 feet above sea level.