history on Instagram: "On June 8, 2014, 52-year-old cave researcher Johann Westhauser was exploring the Riesending cave system beneath the German-Austrian Alps when a rockfall struck him in the head over 3,000 feet underground. He was part of a three-man team surveying deep passages when the impact left him with a serious traumatic brain injury. His partners had no radio signal. One climbed for 12 hours to reach the surface and alert rescuers. The other stayed behind in total darkness for days t