In August 2018, three Apnea Academy instructors arranged a unique expedition to freedive a remote underground lake in the northernmost region of Namibia.
Getting to the lake proved to be a challenge, with the divers descending more than 100 meters/328 feet down the cave, taking about two hours just to get to the water (and another four to climb back out).
The lake itself is more than 150 meters/492 feet deep, with the bottom as of yet undiscovered. The divers and crew had to contend with extreme conditions not typically encountered in freediving, with hazards that included repetitive diving in near-to-complete darkness and constant rock-fall.
This will be the first of several expeditions to freedive similar cave systems in the region.
A unique documentary film of the expedition is planned for release in the first quarter of 2019, and you can watch the trailer below.