John Muir was an influential Scottish-American naturalist, conservationist, and writer, deeply dedicated to preserving the nations wilderness.
Alison Hargreaves was a British mountaineer who made history as the first woman to solo climb Everest without supplemental oxygen.
Walter Bonatti was an Italian mountaineer and explorer, renowned for his groundbreaking solo achievements and contributions to the world of alpine climbing.
William Beebe was a pioneering American naturalist, ornithologist, and marine biologist who explored and documented the wonders of the natural world.