Alaska, Tana Glacier, 1993

中文注释：

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英文注释：

"As summer sun melts ice atop the [Tana Glacier], rivulets disappear into surface holes. In time trickle becomes torrent, and a hole widens to a moulin, a gaping cave that plunges into the bowels of the ice—likely more than a thousand feet [305 meters] in this case."

—From "Alaska's Sky-High Wilderness," May 1994, National Geographic magazine

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