Layered ruins of seven successive civilizations. Pre-Upheaval, medieval, and modern construction visible in collapsed walls. A Lumicite source in the deepest level has shaped settlement here for centuries.
Convergence zone. Multiple civilizations built at the same point across centuries, each on ruins of the previous, each eventually failing and covered. Lumicite source shaped surface geometry for centuries through subtle magnetic and thermal influence.
Collapse reshaped all again, creating vertical cross-sections. Pre-Upheaval on top of mid-century on top of nineteenth century on medieval on older. Each readable if you know what you're looking at. Seam passages only exist because collapse created negative spaces between structures of different eras.