San Gabriel Mountains National Monument, Nature reserve in San Bernardino County, United States.
The San Gabriel Mountains National Monument spans 346,177 acres across Southern California, featuring mountains, deep canyons, and Mediterranean ecosystems.
President Barack Obama designated this land as a national monument in 2014, following the protection efforts that started with the San Gabriel Timberland Reserve in 1891.
The mountains hold 600 archaeological sites spanning 8,000 years of human history, including significant locations connected to Native American tribes in the region.
The monument contains numerous trails for hiking and mountain biking, with Mount San Antonio and Mount Baden-Powell among the prominent peaks accessible to visitors.
This protected area supplies one-third of Los Angeles County's water and provides habitat for 300 plant species that grow exclusively in these mountains.
Location: San Bernardino County
Operator: United States Forest Service
GPS coordinates: 34.32124,-117.87363
Latest update: March 11, 2025 05:54
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