Sometimes its not easy or practicable to build an underground shelter of any kind. If you are in this position then deployables are probably one of your best options. These include tents, inflatable domes and other quick to deploy structures.

BigTop Shelters-This material is very strong, can be used for shelters, and is super light.

DRASH-Deployable Rapid Assembly Shelter

GTI-geomembrane covers-The covers can capture gas as a bonus and you can use it for fuel. Also used to protect everything from grass to your water tank. Canada

Kifaru Tipis-Comes with a stove and can be used for snow camping. Plust other neat products for the outdoorsman.

Moss Tents-Tents designed for the serious outdoor person.

Pacific Domes-Beautiful deployables. Can be winterized. Come in a huge variety of sizes.

Shelter Systems-Their above ground shelters have been seen in various films and TV including the Sci-Fi show Earth . They have some pretty cool shelters.

Solarium from Shelter Systems-Quick to set up.

Geo-Lite Systems-Models include rapid set-up, turn-key dwellings as well as conversion modules for existing or kit-type structures.