With a chunk of the proceeds from the sale of a house (thankfully, not all of it), I'm planning on installing new septic AND building an above-ground tornado shelter. My plan is to face the entry to the shelter to the northeast, as most severe storms here come out of the southwest --- and the *earth mound* the shelter. I do not want to go underground with it because we have such a high water table and because it will be easier to keep track of all the snakes and whatnot (which will move into the shelter, believe me) if the shelter's above ground. I haven't yet decided on the actual structure of the shelter itself --- whether it will be rebar and cinderblock or ??? I'm curious to know if anyone else here has ever built an above-ground tornado shelter or a small earth mounded structure.