Actually that makes Antartic a better place to try. If there is a problem they use the food, water, and air available for survival. Then you learn whatever lessons needed and try again until you get to the point where you can live for an arbitrary amount of time there. Once you solve that problem you can move to the Atacama desert.
Of course since we are on earth either way a rescue plan is at most a few days away (generally hours but bad weather might stop your efforts for days).
Of course since we are on earth either way a rescue plan is at most a few days away (generally hours but bad weather might stop your efforts for days).