posted on Feb, 16 2012 @ 12:20 AM
we are using a six foot diameter metal culvert for our shelter, so we can stand up, no crouching. there is six foot of earth over the top of it, or
rather it is six feet under ground level. we have an air ex-changer that is filtered, not to be used till the dust settles. it is well stocked with
everything we need. and when we need to come out, we will be well armed as well. Our site is hidden from view, and is actually in a remote place away
from everyone so no one knows where it is except us (as far as we know). There are a lot of thing to think about if you are going under ground though,
especially supporting the load that is overhead, and if your shelter is conventional, just make sure you use a lot of large uprights (4x8's) and
large cross beams to support your roof. you don't want your shelter to be your tomb.