As a 13 year old kid, I once dug a 4x4 ft hole, 7 ft deep, in one day, by myself. We needed a well, and that was the start, but that night,we got a HUGE rain, that both collapsed the sides of my hole, but also filled up the cattle pond quite a bit, and got the spring flowing again. So there was no need to finish the "well'. Point IS, you can dig a spiderhole in one night, and SHOULD have a few ALREADY dug and cvoered at your retreat area. Once in that hole, you can sleep the days away, and dig at night. In a week, you can have a very nice below ground shelter, and yes, that DOES include scatter-hiding the evactuated earth.