Hannibal, one of history’s most famous generals, achieved what the Romans thought to be impossible. With a vast army of 30,000 troops, 15,000 horses and 37 war elephants, he crossed the mighty Alps in only 16 days to launch an attack on Rome from the north. For more than 2,000 years, nobody has been able to prove which of the four possible routes Hannibal took across the Alps, and no physical evidence of Hannibal’s army has ever been found…until now.