TED Talksのインスタグラム(ted) - 2月24日 03時57分

This stunning glacier cave in Oregon’s #MountHood looks as old as time itself, but it may not last for long. Originally formed when glacier water carved it out of the ice, the cave—majestically named Snow Dragon—shifts and widens as the glacier melts. Once skylights form, air flows faster through the cave and weakens its structure. Snow Dragon could collapse as soon as 2016. To see more incredible but endangered glacier caves, head to go.ted.com/icecaves.
Photo by Brent McGregor (@glacier_cave_explorers)
#caves #glaciers #MtHood

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