@2nd2dWhat's hiding under San Diego? San Diego’s Forbidden UnderworldThis video from Voyager explores San Diego's hidden underground world, revealing forgotten Prohibition-era tunnels, buried gravesites, long-lost military bunkers, ancient archaeological finds, and secret smuggling routes. The video provides a deep dive into the fascinating and often eerie history buried beneath the city, offering insights into San Diego's past that locals and visitors alike may not have known.