Jericho's tower — 11,000 years old and we still don't know why they built it

Tell es-Sultan, West Bank. The tower at Jericho is 8.5 meters tall, 9 meters in diameter at the base, built around 8000 BCE. Pre-pottery Neolithic A — these people didn't have ceramics yet. The tower is solid stone, built against the inside of a mudbrick wall, with an internal staircase of 22 steps ……