Unknown world below the ground by Martin Broen

This series was shot in the underwater cave system of the Yucatán Peninsula in Mexico – the biggest underwater river system in the world, with amazingly decorated tunnels and chambers that can compete with the best gothic churches in the world.

These decorations took millennia to form in the dry caves and then got preserved when the caves flooded after the last ice age. A majestic world that is under our feet and is barely known due to the challenge of reaching and photographing it, with no natural light beyond the entry points (cenotes). These are locations that may be hours away from the closest exit to safety, through a labyrinth of underwater tunnels, but that can offer (to the daring photographer) some unique experiences to shoot.