Homeless Las Vegas outcasts who live in dark underbelly of TUNNELS that run beneath Sin City's glitzy casinos lay bare their 'brutal' struggle for 'survival' against hunger, deadly floods and prowling SERIAL KILLERS

YouTuber Brandon Buckingham went about interviewing a handful of the 2,000 or so people living under the Strip's five-star hotels and casinos to find out what life is really like.