Jericho’s walls shatter as an earthquake rumbles across the great rift of the Jordan Valley. At bottom, the city’s stone revetment wall (large boulders) and the crenelated mudbrick parapet wall on top of it (smaller bricks) start to crumble. The mudbrick city wall on top of the tell (upper left) cracks and tumbles down as well; the quake splits houses built on top of the earthen rampart between the lower and upper walls. Piles of crumbled bricks form rough ramps, allowing an invader to go directly into the fatally exposed city.