There are instances of humans assembling mammoth bones into some sort of structure: https://www.smithsonianmag.com/science-nature/60-mammoths-house-russia-1809

There are instances of humans assembling mammoth bones into some sort of structure: https://www.smithsonianmag.com/science-nature/60-mammoths-house-russia-180974426/ https://www.smithsonianmag.com/science-nature/60-mammoths-ho... > 25,000-Year-Old Structure Built of the Bones of 60 Mammoths According to the article, similar albeit smaller structures have also been found across Eastern Europe.