Otzi the Iceman is well naturally preserved mummy of a man. The man who was been captured in Ice was believed to be over 53 centuries old (3300 BC).
How the mummy was found:
The mummy was found by Helmut and Erika Simon a German couple who were hiking the Oetzal Alps on 19th Sep'91. At first the couple thought that it was some mountain climber's mummified remains, but they finally decided to take a photo and report the incident to a nearby lodge caretaker, Markus Pirpamer. He in turn informed the respective authorities.