NEW YORK (AP) — Researchers have discovered life-size rock carvings of camels, gazelles and other animals in the Saudi Arabian desert. The carvings date back to around 12,000 years ago and many are over 6 feet (1.8 meters) tall. The animal carvings and engraving tools found at the site show that people were living in the area about 2,000 years earlier than scientists thought. People have been creating rock art in Saudi Arabia for thousands of years, Guagnin said. Scientists weren’t sure if people lived in the desert during this time period since conditions were dry and water was thought to be scarce.