Researchers from Poland have reportedly have found remains of mammoths that suggest human activities may have pushed them towards their extinction.

The remains of 110 mammoths that are about 25,000 to 30,000 years old were found by researchers in Krakow, Poland. One particular bone in the discovery was found to be damaged with a fragment of flint in it.

Flint, a mineral used in the production of arrows and spearheads in the past, was a critical resource in the Stone Age.

Upon further inspection, the piece of flint was found to be about 7 millimeters long. The fragment was almost certainly derived from a spearhead that shattered when it hit the mammoth’s bone. The way the flint fragment was found showed considerable force was used in throwing it and it dealt a lethal blow to the mammoth.

In the past, scientists and researchers have long debated that prehistoric hunters did not have the ability to hunt such creatures. Instead, it was generally thought that humans killed mammoths by driving them over cliffs or into deep pits.

The flint fragment found in the bones suggests otherwise. In fact, the new findings also prove that ancient humans actively hunted mammoths with weapons they crafted. This indicates that humans may have killed more mammoths than was first thought.

While the findings of the study may not draw any concrete conclusions, they do add new perspectives into the roles that ancient humans played in the mammoths’ extinction.