Freeze dried as an alternative to canned food gets around the freezing problem, except that you must have water to reconstitute FD for consumption. Depending upon circumstances, water itself may be a scarce resource.

I understand that ground below the surface, but not at great depths, holds the yearly average temperature for the immediate area, so,if you know this, and that temperature is above freezing, you don't need to worry about freezing. Ideally, you will have real good cold storage

I like canned goods for long term storage because they are cheap, can often be consumed right out of the can, and store reasonably well for a fairly long time. I like FD when I am carrying the food on my back, and I know I can count on reasonable access to water.