Totally Surprised

The archeologists found some amazing artworks in the cave which were discovered in Spain. But what surprised the archeologists the most was that there were 6,000 artworks in number. Even in past, the archeologists’ community haven’t found the cave paintings in such a big number. But there was another problem, who created them? They couldn’t tell because there was no clue to rely on. But soon they found out about the artists who created these amazing work and you’ll be shocked to see that it wasn’t humans who made them. Then who?