Building A Bunker In My Backyard

I couldn't fall asleep the other night because I began dreaming (again) of building a bunker in my backyard. I started thinking about how much fun it would be to have a "cat box" over in the corner beneath the pine tree outside my bedroom window. From it I could while away the summer evening hours after the kids had gone to bed, splashing sand and soft-flight golf balls out of it until darkness would eventually fall. I've been considering digging out an egress window in my basement wall for better ventilation ever since we moved in last summer and the thought struck me the other night that I could use the dirt from the hole for the window to help create some depth and shape to the bunker I could build right next to it. This might qualify me as officially crazy about golf. I don't know--I just want to be a better bunker player and what better way to practice then in your own back yard? A shovel, some drain tile, a yard or two of class-whatever sand and maybe a few strips of sod and voila! I'll be the best-darned-amateur-six-handicap-bunker-player around.