TED Talksのインスタグラム(ted) - 12月4日 01時06分

Cave explorer Brent McGregor descends into a glacier cave in Oregon. The inside of the cave is completely covered in ice, so Brent is wearing big spikes on his feet - called crampons - to avoid slipping. In a recent #TEDTalk, fellow cave explorer Eddy Cartaya described the freezing temperatures the pair encountered inside the cave. “Cold air from the top of the mountain was flowing down this hole and blasting through the cave, freezing everything inside of it.” Learn more go.ted.com/glaciercaves
Photo by @glacier_cave_explorers

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