Soldiers on ground patrol found a 120-hectare marijuana plantation on the floor of the Baja California desert, more than 240 km south of Tijuana, on Tuesday 12 July 2011.[1] The field was hidden under black screen cloth in a huge square, with a dug well and hoses irrigating the crop.[1] About 60 workers fled when the troops arrived, and six suspects were arrested later at a military checkpoint, with no arrests at the scene itself.[1]

The army called it the largest marijuana plantation ever detected in Mexico, four times bigger than the previous record find at a ranch in Chihuahua in 1984.[1] Officers estimated traffickers could have harvested about 120 tons of marijuana worth some 160 million dollars.[1] The army began destroying the plantation that Friday.[2] Days later the army said the plantation belonged to Joaquin Guzman, alias El Chapo, and his Sinaloa cartel.[2]