National Park Service rangers and officers from cooperating agencies removed 18,926 marijuana plants from a plantation hidden in the East Fork drainage of the Kaweah River on 2 September 2004.[1][2] Thirteen park rangers, a special agent and ten state anti-marijuana (CAMP) officers took part, with immigration-service helicopters overhead using infrared gear to check the site for growers before teams moved in.[1][2]

The farm was organized and well kept, with encampments and acres of cleared underbrush, and teams seized firearms and hundreds of pounds of fertilizer and pesticides.[1] The near-mature crop would have been worth more than $75 million, the park service said.[1][2] Investigators tied the site to the 19 August arrest of four Mexican nationals and kept investigating the driver and passenger of the car that collected them.[1]