Deep in southeastern Turkey, archaeologists are excavating a network of 12,000-year-old monumental structures that predate Stonehenge by 6,000 years and were built before humans invented farming. The 2025 discovery of the first human face carved on a T-shaped pillar at Karahan Tepe suggests these weren't primitive hunter-gatherers—they were people with rich spiritual lives who gathered by the thousands to build temples in stone.