The Baca Ranch Rural Historic Landscape District (Baca Ranch RHL) is comprised of over 44,500 acres of what was once the original 100,000-acre Baca Land Grant No. 4 awarded in 1862 to the Luis Maria Baca family.1 Located in the northern San Luis Valley, a broad, high-elevation valley in south-central Colorado, the land grant extended from the valley floor into the western reaches of the Sangre de Cristo Mountains.