This is the story of fearless explorers who pushed the limits of adventure—but not all returned.
Ingi Már Aldan Grétarsson set out to explore Blágnípujökull, an outlet glacier of Höfsjökull in Iceland, facing the brutal forces of nature. Matthias Rimml, an Austrian mountaineer, attempted a daring solo ascent of Denali, North America's tallest and most unforgiving peak. Meanwhile, 23-year-old chemist James Mitchell ventured deep into Schroeder's Pants Cave, a labyrinth named after an unfortunate wardrobe malfunction experienced by its early explorers, Herb Schroeder and George Lyon.
These are the gripping tales of exploration, risk, and the unpredictable dangers lurking beneath the earth and above the clouds.