I'm trying to find out how far down the raccoons can dig, and how far out from the run they will attempt when they can't get through up close? Our run's walls will be galvanized welded wire hardware cloth fencing material. From all I've been reading on these forums, we can foil any digging predators (such as raccoons and possoms; we don't have bears or cougars) by either of three types of physical barriers. (I don't want to use electric fencing.) Method # 1: continue the run's walls straight down, buried deep into the earth vertically, or Method # 2: continue the run's walls straight down, buried deep into the earth vertically, and then form an apron deep underground by bending the material to now go horizontally out, away from the run, or Method # 3: same as method # 2, but form the apron at ground level, and cover the horizontal apron with heavy stuff such as cinderblocks, or boulders, etc. I'd like to hear from people who've actually had raccoons attempt and/or succeed via digging/burrowing/tunneling. My questions are: How far down is the maximum they'll dig, so I'll know the minimum depth of the wire cloth for method # 1; How far out is the maximum they'll attempt to start tunneling so I'll know the minimum size of the horizontal apron for methods # 2 and 3.