im trying to find my distribution box.. the guy that came out to pump my septic tank, ran a snake 30' in that direction and pulled out roots.. he suggested findin the box, and opening it to further clean my system out..

ive been probing my yard for the past 3 days to try to find this elusive little creature..

any helpful and/or encouraging thoughts as to where or how deep this box might be? or if my system even has a distribution box?