Found evidence that Ötzi the Iceman’s tattoos were done using a single-ended tool

Artist Tattooed Himself to Solve Mystery of Ötzi The Iceman's Tattoos

Unlocking the Iceman: Advanced Genetic Analysis of “Ötzi” Reveals Surprising Ancestral Roots and Appearance

A new look at Ötzi the Iceman’s DNA reveals new ancestry and other surprises