Los Guillicos Preserve
The 40-acre Los Guillicos Preserve is 1.6 miles south of Mount Hood in the foothills of the Mayacamas below Sugarloaf Ridge. Elevation ranges from 600 to 800 feet. Wappo Indians, who are thought to be one of the oldest native California groups, inhabited the area before the arrival of the Spanish missionaries in California. Archeological sites and artifacts from this period have been recorded on the Preserve.
The dominant vegetation at the preserve included mature Douglas fir, black oak and California bay laurel. The preserve was partially burned by the 2017 Nuns fire and then severely impacted by the 2020 Glass fire.
GEP faculty and students (and other departments) use this preserve for research -- especially around fire ecology and recovery.
