{"podcast":{"title":"Earth Ancients","slug":"earth-ancients-391184","podcast_index_feed_id":391184,"rss_url":"https://www.spreaker.com/show/2790919/episodes/feed","website_url":"https://www.spreaker.com/show/earth-ancients_1","image_url":"https://d3wo5wojvuv7l.cloudfront.net/t_rss_itunes_square_1400/images.spreaker.com/original/88d9888baa9b9f147a64a175d3fc032e.jpg","author":"Cliff Dunning","episode_count":969,"summary":"Earth Ancients chronicles the growing (and often suppressed) evidence of known and unknown civilizations, their ruined cities, and artifacts developed from advanced science and technology. Erased from the pages of time, these cultures discovered and charted the heavens, developed earth-centric sciences and unleashed advancements that parallel and, in many cases, surpass our own. Join us and discover our lost history. Become a supporter of this podcast: https://www.spreaker.com/podcast/earth-ancients--2790919/support .","last_synced_at":"2026-09-13T00:17:52.831005+00:00","page_url":"https://stenobird.com/podcast/earth-ancients-391184"},"episode":{"title":"Jan Francke: Scanning the Ancient World, with Ground Penetrating Radar","slug":"jan-francke-scanning-the-ancient-world-with-ground-penetrating-radar","published_at":"2026-08-15T14:00:02+00:00","page_url":"https://stenobird.com/podcast/earth-ancients-391184/jan-francke-scanning-the-ancient-world-with-ground-penetrating-radar","show_page_url":"https://stenobird.com/podcast/earth-ancients-391184","url":"https://www.spreaker.com/episode/jan-francke-scanning-the-ancient-world-with-ground-penetrating-radar--73955835","audio_url":"https://dts.podtrac.com/redirect.mp3/pscrb.fm/rss/p/api.spreaker.com/download/episode/73955835/jon_3_wav.mp3","summary":"Jan Francke: Scanning the Ancient World, with Ground Penetrating Radar What lies beneath some of the world's most mysterious ancient sites?Dr. Jan Francke has spent more than three decades working with ground-penetrating radar (GPR) and developing technologies capable of imaging structures, geological formations, tunnels, voids, and other features hidden beneath the Earth's surface.In this episode of Earth Ancients, Jan joins Cliff Dunning to discuss the science behind GPR and its growing role in archaeology. The conversation explores radar investigations at ancient sites, including work around the Giza Plateau and Great Pyramid, as well as projects in Mexico, the Middle East, Australia, and other parts of the world. Jan also explains an important problem surrounding ground-penetrating radar: while GPR can produce remarkable results under the right conditions, the technology can easily be misunderstood, misused, or overinterpreted. What can radar actually see underground? How deep can it penetrate? What creates an anomaly? And when does an intriguing radar image become credible evidence for a buried structure?Jan Francke is the founder of Groundradar, which develops and deploys specialized GPR systems, including long-range UltraGPR technology. He is also associated with Geolitix, a cloud-based platform for processing and interpreting GPR and other geophysical data. His career has taken him to more than 100 countries, applying geophysical technology to archaeology, geology, mineral exploration, underground void detection, and other subsurface investigations.This conversation offers a rare look at the technology increasingly being used to investigate what may remain hidden beneath some of the world's most important ancient landscapes.Learn more about Jan Francke and Grou…","meta_description":"Jan Francke: Scanning the Ancient World, with Ground Penetrating Radar What lies beneath some of the world's most mysterious ancient sites?Dr. Jan Francke…","key_points":[],"chapters":[],"topics":[],"duration_seconds":5491,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/earth-ancients-391184/episodes/jan-francke-scanning-the-ancient-world-with-ground-penetrating-radar/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/earth-ancients-391184/jan-francke-scanning-the-ancient-world-with-ground-penetrating-radar.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}