Descend into an atmospheric urban history where a public health crisis forged a haunting underground city of the dead. Perfect for an evening commute, this immersive exploration reveals how overflowing churchyards and collapsing limestone quarries forced officials to execute a massive engineering feat.

Trade your daily distractions for a focused listening experience that walks you through torchlit galleries and forgotten mass graves. You will march alongside medieval quarrymen and city planners as they methodically stack millions of anonymous remains to save a metropolis on the brink of collapse.

What you'll discover inside:

• The grotesque urban health crisis that turned medieval cemeteries into hazardous, overflowing pits.

• The geological origins of the limestone quarries that built—and nearly destroyed—the neighborhoods above.

• The eerie, torchlit nighttime processions of horse-drawn carts relocating millions of human remains.

• The gritty routines of the quarrymen tasked with structurally arranging anonymous bones into vast ossuaries.

• The evolution of the subterranean tunnels from a desperate municipal solution to a modern dark tourism phenomenon.

• The complex ethical dilemmas and conservation challenges of managing a massive resting place today.

Do not leave these lost souls forgotten in the dark. Press play to step beneath the bustling streets and experience the fascinating, eerie true story of the world's most famous ossuary. Your journey into the shadows is waiting.