Santa Fe National Forest in the context of "Pecos Wilderness"

The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. The rift extends from central Colorado in the north to the state of Chihuahua, Mexico, in the south. The rift zone consists of four basins that have an average width of 50 kilometres (31 mi). The rift can be observed on location at Rio Grande National Forest, White Sands National Park, Santa Fe National Forest, and Cibola National Forest, among other locations.

The Rio Grande rift has been an important site for humans for a long time, because it provides a north–south route that follows a major river. The Rio Grande follows the course of the rift from southern Colorado to El Paso, where it turns southeast and flows toward the Gulf of Mexico. Important cities, including Albuquerque, Santa Fe, Taos, Española, Las Cruces, El Paso, and Ciudad Juárez, lie within the rift.

Pecos is a village in San Miguel County, New Mexico, United States. The population was 1,392 at the 2010 census, shrinking slower than other parts of San Miguel County, partly because Pecos is within commuting distance of Santa Fe. The village is built along the Pecos River, which flows from the north out of the Santa Fe National Forest. Notable locations nearby include Pecos National Historical Park, Glorieta Pass, and Pecos Benedictine Monastery. It is also an entry point for hunting, fishing, hiking and camping in the Pecos Wilderness. The closest metropolitan area is the Santa Fe metropolitan area, approximately 26 miles (42 km) to the west.

Caja del Rio (Spanish: "box of the river") is a dissected plateau, of volcanic origin, which covers approximately 84,000 acres (34,000 ha) of land in northern Santa Fe County, New Mexico, United States. The region is also known as the Caja, Caja del Rio Plateau, and Cerros del Rio. The center of the area is approximately 15 miles (24 km) west of Santa Fe, New Mexico. Most of the Caja is owned by the United States Forest Service and managed by the Santa Fe National Forest. Access is through New Mexico Highway 599, Santa Fe County Road 62, and Forest Service Road 24.