San Gabriel Mountains National Monument was created on October 10th, 2014 to protect 346,177 acres of pristine wilderness above Los Angeles. More than 15 million people are within a 90 mile radius of the monument, but a visit will feel uncrowded with 4 designated wilderness areas. 300 species of plants and animals are found here and nowhere else on Earth making it a rich biodiversity zone. The San Gabriel Mountains provide Los Angeles with 70% of its wild space and 30% of its drinking water. Native American history here dates 8,000 years.