i'm still trying to track down the film "man of the wilderness"..made in Canada in the later 80's..this guy and
his buddy were dropped off by chopper with just the clothes
on their back..the busted rocks for tools--made fire--
put together a shelter..they were out for months..
this was done as part of his PhD..they kept track of
everything they ate--and they had a small scale to weigh
all the food they found..mosty berrys..this was long before
the survival shows and was the real thing