Ancient Civilizations S01E09 - Entrances to Inner Earth

Is there an ancient code which points the way to inner earth civilizations like Agharta and Patala? Oral traditions from indigenous cultures, throughout the world, all point to ancient advanced civilizations thriving deep under the earth. With advances in technology and spelunking, scientific communities are confirming that the Earth's crust is filled with immense caverns which form vast subterranean networks. Our team of scholars have combed through these details to find the overlap between ancient tales and scientific discoveries. We take this one step further as we posit that these entrances to inner earth may be allegories of places where one's physical journey becomes spiritual.