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.
(Text and photograph from "Alaska's Sky-High Wilderness," May 1994, National Geographic magazine)
There are 58 national parks in the U.S., as varied as the country that houses them. We've gathered everything you need to know to set off for a summer adventure, plus photo galleries, quizzes, maps, and more.
Merry-go-rounds, deep-fried corndogs and high-flying Ferris wheels mark the start of state fair season. Submit your best summer fair pictures to the newest category of My Shot and view photos from other fairs across the country.
The desolate beauty of Alaska's Seward Highway offers the chance to explore nature uninhibited by human influence. Whales, waterfalls, glaciers and ocean fjords all await travelers of this remote locale.
