1953 Map of Horcado Ranch

Evidence of former infrastructure is visible in the southwest, where the Old Line Railroad Grade skirts the edge of Caja Mesa near the Arroyo de la Cañada Ancha. Human presence is sparse, centered on the Horcado Ranch and the small settlement of Las Dos. The drainage patterns of the Arroyo Calabasa and Rio Tesuque reveal the erosive forces shaping the high desert before reaching the northern boundary of the Cuyamungue Grant.