1915 Map of Summitville

About this map

Mining activity and high-altitude ranching define this portion of the San Juan Mountains, where the Continental Divide separates the San Juan National Forest from the Rio Grande National Forest. The northeastern corner is heavily marked by industrial extraction at Summitville and the nearby Platero, featuring specific claims like the Asiatic Mine and Forest King Mine. These mining hubs were supported by high-mountain water sources such as the Alamosa River and Wightman Fork. To the south, the landscape shifts toward the Chama River headwaters, documenting early 20th-century education at the Blanco Basin School and Blanco School. The presence of the Logging RR near the New Mexico state line and the Chama Club indicates the importance of timber and seasonal recreation alongside established agricultural holdings like Petersons Ranch.