Brad Pitt‘s inner left forearm tattoo has been ID’s as the outline of Ötzi the Iceman, aka Frozen Fritz and Similaun Man. Here’s
some history behind Europe’s oldest natural human mummy via the South Tyrol Museum of
Archeology:

Over 5000 years ago, a man climbed up to the icy heights of the
Schnalstal glacier and died. He was found by accident in 1991, with his clothes
and equipment, mummified and frozen: an archaeological sensation and a unique
snapshot of a Copper Age man.

The mummy of Otzi and the articles found with it, found in 1991 on the border
between Austria and Italy, have been on exhibit since March 1998 at the South
Tyrol Museum of Archeology.