NASA Discovers a ‘Disturbing’ 1,000-Foot-Tall Cavity Under a Glacier in Antarctica On February 2, 2019 By peanutgallerynhIn Environment,, Science and Stuff, NASA Discovers a ‘Disturbing’ 1,000-Foot-Tall Cavity Under a Glacier in Antarctica sigh… Share this: Share on X (Opens in new window) X Share on Reddit (Opens in new window) Reddit Share on Facebook (Opens in new window) Facebook Like Loading... Related