"Journey into Amazing Caves" is a visceral, suspenseful expedition with a new breed of scientists who boldly explore places once thought off-limits to human presence, let alone IMAX cameras. Join Dr. Hazel Barton and Nancy Aulenbach as they travel to unique and forbidding ice caves in Greenland, underwater caves in the Yucatan, terrestrial caves in the Grand Canyon and other spectacular locations. You will wriggle through tiny, twisting passages, swim through flooded underground vaults, drop into gleaming blue labyrinths of ice, and enter a world so extreme the microscopic creatures who live there are called extremophiles. For those compelled to push their limits in the world's most hostile environments, the risk of fatal danger and thrill of new discovery are the everyday factors that make cave exploration such an awe-inspiring experience.