If you haven't seen it watch alone In The Wildness. This is one tough SOB. https://www.amazon.com/Alone-Wilderness-Dick-Proenneke/dp/B0009PUAFG https://shop.pbs.org/alone-in-the-wilderness-dvd/product/ALWL401?mrkgcl=889&mrkgadid=3241647511&rkg_id=h-44e2b070fa6728cf035c19d6ea2384de_t-1527290938&product_id=ALWL401&aachannel=paid_search&adpos=1o4&creative=219890011133&device=c&matchtype=&network=g&gclid=EAIaIQobChMIkpab8IGi2wIVz1uGCh2DcQY9EAQYBCABEgJGkfD_BwE