“Photographer and cave diver extraordinaire Martin Broen’s dramatic photographs whisk the viewer away into a secret underwater world...These works are not just for casual readers—they are for those who seek to expand their horizons, enrich their lives, and connect with the world on a deeper level.” — SMITHSONIAN MAGAZINE"A visual masterpiece...Light in the Underworld is a powerful tribute to human curiosity and the awe-inspiring beauty of the natural world, hidden in plain sight... more than just a coffee table book, it is a call to action, urging readers to appreciate and protect these fragile ecosystems..." — SEVEN SEAS MEDIA"…invites readers on an extraordinary journey into the underwater caves and cenotes of Mexico’s Yucatán Peninsula, a rarely explored diving destination." — X-RAY MAGAZINE