Description
Derinkuyu is an underground city in Türkiye. It has existed for thousands of years. Who built it and when?
Music by JuliusH "Mystery Bells - Ambient Chill Out Music"
Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/06/16/s04e24-mysterious-places-derinkuyu-who-built-it/