( To see the video of this show, click here: https://youtu.be/3ri4KYn0vj4 ) NEW WEBSITE with Blogs, Videos, and Podcast direct links: https://strangeparadigms.com/ FREE TRIAL for the Skinwalker Ranch Insider Membership Website: https://tinyurl.com/skinwalkerinsider Cristina's Instagram, Facebook, YouTube, Twitter and More > https://beacons.ai/cristinagomez Patreon Club for Extras & Behind the Scenes: https://www.patreon.com/paradigm_shifts From the mysteries of people who disappeared underground, to tunnels, underground ancient cities, underground bases and other mysteries of the underground are the focus of this episode of Mysteries with a History with Cristina Gomez and Jimmy Church. Across our planet there are ruins of ancient underground constructions, many of which seem to have been carved with advanced precision and methods. Then there are the legends of subterranean civilizations that allegedly remain underground to this day. It is well known that there are many underground military bases in China, Russia, the United States, and many other nations, some of them featuring protective bunkers and sensitive areas of advanced scientific research. Then there are the mysterious cavern systems across the world, some of them steeped deeply in myth, lore, and legend. These, and many other aspects of the underground get discussed and reviewed in this episode.