Martin Broen’s new book, “Light in the Underworld,” features stunning images of Mexico’s underwater cave systems. Broen has spent eight years diving through dark tunnels, capturing over 250 cenotes. The book showcases the unique beauty and environmental importance of these underwater locations. It offers an immersive experience for readers, highlighting the hidden wonders few people get to see. “Light in the Underworld” is available for purchase on Amazon and Rizzoli’s website.