A tip from bear hunters led police to a marijuana growing operation stretching about a mile along a remote ravine on public land in northern Wallowa County.[1] On 15 June 2011 a multi-agency team backed by the Oregon State Police SWAT unit and Oregon Army National Guard helicopters served a search warrant on the U.S. Forest Service site.[2]

Officers eradicated more than 91,000 plants, from starters to ten-inch plants, over a two-day period, and arrested six men held in the Union County Jail on charges of unlawful manufacture and possession of marijuana.[1][2] Miles of plastic irrigation tubing lined the terraced ravine, and officers found weapons, food and supply camps built to support growers for weeks.[1] State police called it the largest outdoor marijuana operation ever found in Oregon; the exact location was withheld while the investigation continued, with wildlife staff to survey the environmental damage and rehabilitation needs.[1][2]

The six arrested

Police named the six as Arturo B. Barrera, 26, Federico R. Carrasco, 24, Christian R. Gonzalez, 28, Fredy F. Montes, 32, Jesus A. Sanchez, 21, and Audel C. Soto, 29.[1]