On 26 and 27 September 2007 about 30 law enforcement officers from the Mariposa County Sheriff’s Office, the US Forest Service, California’s Bureau of Narcotics Enforcement (CAMP) and Yosemite National Park raided four illegal marijuana cultivation sites.[1][2] Three sites sat right on the Sierra National Forest and Yosemite boundary between the Wawona road and the South Fork of the Merced River, and the fourth lay a short distance outside the park in the Sierra National Forest.[1][2]

Officers seized 14,536 plants valued at over $43 million.[1][2] US Forest Service officers made two arrests in the raid, one adult male and one 17-year-old juvenile, both Mexican nationals.[1][2]