Guido Zingerle (3 September 1902 - 9 August 1962), also known as The Monster of Tyrol, was an Italian murderer and possible serial killer who killed at least two women in the 1940s and raped another three. In his murders, Zingerle had specially-equipped caves in the Tyrolean mountains, where he would abduct and then rape his victims. He killed by burying his victims under a pile of stones to let them die in days of agony, which he often observed. After the Second World War, he moved to Innsbruck in Austria.