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

National Geographic History on Instagram: "Believed by some to be the entrance to Hades, the association between the Alepotrypa Cave in Greece and the concept of death is ancient. For thousands of years, this cave served as a burial place for early Greek farmers. #TheGreeks is now streaming on @DisneyPlus."

The process of building a safe shelter in a mountain cave unsing spray foam #survival #camping #campinglife #outdoors