Overcoming Fear: Tales from the Deepest, Darkest, and Most Dangerous Parts of the World August 27, 2019 by Speakers' Spotlight Most people would be terrified to walk into Jill Heinerth’s workplaces. A celebrated cave diver, Jill has undergone the most dangerous technical dives through claustrophobic blackness deep inside un... Learn more Tags: Cave Diving, Fear, Into the Planet: My Life as a Cave Diver, Jill Heinerth, Overcoming Fear, Risk Management