Three football fields in length
This may be taking the old adage that the best place to hide something is in full view just a little too far.
The other lesson is, if you're going to do something like this, for God's sake, polish up your woodsman skills and bring a compass.
Word has it the grow was busted when one of the guys "actually got lost in the woods after visiting his plantation, panicked and called 911 for help. When they were searching for him they also found the plants."
Supply your own joke.