According to Live Science, the hunter was exploring the O2 Ranch in Brewster and Presidio counties near Big Bend National Park when he spotted a mammoth tusk lying in the drainage

“Seeing that mammoth tusk just brings the ancient world to life,” Juett said. “Now, I can’t help but imagine that huge animal wandering around the hills on the O2 Ranch. My next thought is always about the people that faced those huge tusks with only a stone tool in their hand!”