In 2009 a team of British cavers explored a gigantic cave in the jungles of Vietnam: Hang Son Doong.
At a height of 200 meters and width of 150 meters it's the worlds largest known cave. This team of scientists were the first humans to enter the cave. They made it to a point 6 km into the cave system in 2009 before being stopped by an unsurmountable obstacle they named "The Great Wall of Vietnam". They returned in 2010 with the necessary gear to conquer the wall. Along went the Work&Rescue Pack - it's durability and waterproof properties making it the perfect companion in this forbidding environment.