Halfway up a near-vertical ravine in the Andes, someone carved an inverted V-shaped entrance into the mountainside. 

Then they sliced the bedrock with great precision to create a shallow door that goes nowhere; the same design appears in ancient Persia and Egypt. Then for good measure, they carved an additional altar with three alcoves into an outcrop of bluestone. 

This sacred site is named.. Naupa Hauca. But the mysteries don't stop there.. You're listening to Casual History

New episodes every Sunday! 

- CH