The Legacy of Los Morteros

Los Morteros is the site of a large Native American village inhabited between about 850 and 1300 CE. The site stretches north and south along the Santa Cruz River and extends west of the river past the current right-of-way of Silverbell Road.

For centuries, Los Morteros was a large village and the center of an extended community of related sites along the river. Archaeologists named the site “Los Morteros” for the many bedrock mortars found within the site. Residents used these features to grind and mill seeds, corn, and other plants.

The Los Morteros location was the scene of important events in the history of southern Arizona. The famous 1775–1776 expedition of Spanish explorer Juan Bautista de Anza made a major encampment here in the area just north of Coachline Boulevard. In the 1800s, the historic “Pointer Mountains” Butterfield Stage Station was established near present day Oasis Street and Coachline Boulevard.

Los Morteros is an important cultural resource because its undisturbed, buried remains contain a huge reservoir of information about the history of the Tucson Basin. Equally important, the Tohono O’odham Nation considers Los Morteros an ancestral site. Los Morteros is one of the “Last of the Best” of Pima County’s cultural resources. The core area of the ancient village, the Anza campsite, and the historic stagecoach station (approx. 120 total acres) were acquired by Pima County with 1997 bond funds, with additional funds approved in the 2004 bond election to preserve and manage the resources. The archaeological and historic resources are protected as a Pima County Conservation Area to save them from encroaching development and to preserve them for the future of Pima County. [Narrative courtesy of Archaeology Southwest.]

Please Join AAHS for a fun morning of exploring the ancient history of the site with Bill Doelle, who served as Principal Investigator on the Los Morteros Research Project in 1979-1983; and its conservation history with Linda Mayro, who served as Pima County Archaeologist from 1988 to 2023 under whose guidance the Los Morteros Conservation Area was created.

We will meet at 9:00 AM at the El Rio Preserve, 10190 N Coachline Blvd, Marana, AZ, 85743 (click here to see map).

Expect chilly temperatures. There is a restroom available at the El Rio Preserve parking area where we will be meeting, but not within the Conservation Area where the tour will take place. We anticipate this tour will take about 3 hours, give or take a bit depending on dialogue and walking speeds.

Trip attendance is limited to a maximum of 20 people, including two trip leaders, and is restricted to AAHS members and their guests only. To register, use the registration button at the top of the page or email R.E. Burrillo at Ralph.Burrillo@aahs1916.org. We will create a waitlist if necessary.