I can't imagine a situation in my life where a person would find 'pork' but nothing else, if one is on a trail and lost somewhere the chances of finding bugs to eat are more probable than pork just lying around or even a wild hog for that matter .. al7mdlillah that our religion is a religion of ease, but scientifically speaking one is more likely to die of thirst than hunger, and if one can find fresh water then fish is sure to be there and some scattered plants as well.. May Allah swt save us from tribulations of having to break his commandments..