Ghost Ranch became Georgia O'Keeffe's home and a major subject of her paintings.
O'Keeffe first visited New Mexico in 1917 and returned regularly from 1929 onward. She was drawn to the region’s exposed rock, intense light, broad skies, and distinctive geological formations. Ghost Ranch, north of Abiquiu, became especially important in her work.
She rented a house at Ghost Ranch for many summers and painted nearby cliffs and hills repeatedly. The area’s red and yellow formations appear in works such as those based on the Pedernal, a flat-topped mountain visible from the ranch.
O'Keeffe also owned and lived at a house in Abiquiu, another New Mexico location closely associated with her career. Ghost Ranch and Abiquiu are therefore related but distinct places, and the question’s answer refers specifically to the ranch.