Hidden Beneath the Cities “Hidden Hypogeum and Lost Letters” S1E3 May 1 2026 on National Geographic

On Friday May 1 2026, National Geographic broadcasts Hidden Beneath the Cities!
Hidden Hypogeum and Lost Letters Season 1 Episode 3 Episode Summary
The upcoming episode of “Hidden Beneath the Cities,” titled “Hidden Hypogeum and Lost Letters,” promises to take viewers on a captivating journey through history. This episode will air on National Geographic and is sure to intrigue those who love exploring the secrets of the past.
In this episode, the team will investigate a mysterious tomb located in Naples. This tomb is believed to hold the remains of a prince who may have inspired the famous legend of Dracula. The exploration of this site will reveal fascinating details about the prince’s life and the stories that surround him, shedding light on how legends are formed and passed down through generations.
The journey continues as the show uncovers desperate letters written by Jewish rebels. These letters were hidden away in a cave in Israel and offer a glimpse into the struggles and hopes of those who lived during a tumultuous time. The emotional weight of these letters adds a personal touch to the historical narrative, connecting viewers to the past in a meaningful way.
Additionally, the episode will feature a tour of a 6,000-year-old labyrinth in Malta. This ancient structure is a testament to human ingenuity and offers insights into the lives of those who built it. The exploration of the labyrinth will highlight the architectural skills and cultural significance of such sites in history.
Lastly, the episode will showcase the oldest known human burial in Africa. This discovery provides important information about early human societies and their burial practices. It is a significant find that helps to piece together the story of humanity’s past.
“Hidden Hypogeum and Lost Letters” is set to be an engaging episode filled with history, mystery, and emotional stories. It invites viewers to reflect on the connections between the past and present, making it a must-watch for history enthusiasts.
What Time is the “Hidden Hypogeum and Lost Letters” Episode On?
The Hidden Hypogeum and Lost Letters episode of Hidden Beneath the Cities will be broadcast on May 1 2026 on National Geographic at 9:00 PM at ET/PT.
Is the “Hidden Hypogeum and Lost Letters” Episode New?
The Hidden Hypogeum and Lost Letters episode of Hidden Beneath the Cities is all new!
Hidden Beneath the Cities Hidden Hypogeum and Lost Letters Cast & Stars
No cast information available yet.
Hidden Hypogeum and Lost Letters Episode Videos & Previews
Watch Hidden Beneath the Cities Hidden Hypogeum and Lost Letters Online
Watch Hidden Beneath the Cities on National GeographicHidden Beneath the Cities Series Information
Hidden Beneath the Cities is a National Geographic documentary series that explores the hidden infrastructure beneath major urban areas. Using engineering insights, visuals, and expert commentary, the show examines what lies below—such as tunnels, water systems, and other subterranean structures—and explains how they affect life above ground. It focuses on the history, construction, and ongoing significance of these underground networks.
