as the day went on and the helicopters were passing over and i was standing on rocks, waving them down and they're not seeing me, i'm invisible, you lose hope. your hope meter starts to decline a little bit. you have a choice to make. you can sit on the rock and die. you could say mercy and feel pitiful for yourself and play victim or you can start walking down that waterfall and choose life. >> that's hiker amanda eller speaking out after 17 days lost in the hawaiian jungle. she survived on berries, insects, stream water and slept in the den of a wild boar while her friends and family never gave up hope. our next guest helped organize the search.