the chaos that will ensue from such a depression will make gold look like the only life boat left on a sinking ship full of people. the utter failure of unfunded currency? think about it.
The utter failure of unfunded currency and depression do not necessarily go hand-in-hand.
Anyway, the real lifeboats will be the things people need to live: food being #1, followed by a roof over your head, energy, and medicine/medical care.
Gold will be a shiny, pretty metal that some (not all) who have the above to trade will value.