古老的冰川与大海相遇的地方 Where ancient ice meets the sea
Glacier Bay National Park and Preserve
Think of this special spot as the place where two different Alaskas meet—its vast icy north and its verdant maritime south. Glacier Bay is named for this area's dominant feature, the rivers of ice that carve the landscape and periodically calve icebergs into the sea. On February 26, 1925, President Calvin Coolidge declared much of the land around the bay a national monument. But the protected area was greatly expanded in 1980, when a 3.3-million-acre expanse of glaciers, fjords, rainforest, coastline, and mountain peaks was named a national park and preserve.
Pictured here is Lamplugh Glacier, one of the relatively few tidewater glaciers in the park; the vast majority are found inland. Lamplugh is known for its intense blue color—ice and water absorb the red wavelength of white light and transmit blue light, which is what we end up seeing. The thicker and more pure the ice, the more blue it appears.
冰，冰，正在坍塌 Ice, ice, caving
Glacier cave in Iceland
The land of fire and ice is home to countless natural wonders, like these brilliant blue caves formed within the ice of a glacier. (Glacier caves are often called ice caves, but the latter term is properly used to describe bedrock caves that contain year-round ice.) The majority of these glacier caves are on the southeastern edge of Iceland in Vatnajökull glacier, which covers about 8% of the island nation and is one of the largest glaciers in Europe.
Vatnajökull's caves, formed by the flowing rivers underneath the glacier, are famous for their blue corridors and eerie atmosphere. The caves are only accessible from November until March when temperatures are cold enough to strengthen the ice. The caves vary in size and shape each year, so enjoy the beauty of this one while you can, because it may not be around next winter.
Kluane National Park
What looks here like an ice road for 50-foot-tall truckers is really Kaskawulsh Glacier in Canada's Kluane National Park. This corner of the Yukon is home to the largest ice field on Earth outside of the poles, with the slow, steady flow of more than 2,000 glaciers continually carving these vast canyons amid the peaks.
Speaking of peaks, glance up and you'll see the Yukon is also paradise for mountain lovers. And Kluane is its pinnacle, literally: Located within the park is Mount Logan, the highest mountain in Canada (and second-highest on the continent after Alaska's Denali).
'The Crown of the Continent'
With one million acres of rugged, northwestern Montana wilderness to explore, a trip to Glacier National Park could fill up an entire summer and more. But let's just take one day and virtually visit Grinnell Lake. A 7-mile loop trail, a relatively easy one in this rugged country, takes you to the shores of the lake turned emerald-green by glacial silt. Grinnell Lake—as well as Mount Grinnell and Grinnell Glacier—is named for the naturalist and Audubon Society founder George Bird Grinnell. For two decades, he lobbied for the creation of the park, and on May 11, 1910, the 'Crown of the Continent,' as Grinnell dubbed this area, became the nation's 10th national park.
The persistence of Perito Moreno
Yes, it's true that glaciers are shrinking, but not all of them. Perito Moreno, a low-lying glacier in southern Argentina, accumulates ice at about the same rate that it melts into chilly Argentino Lake. This equilibrium makes it one of the few glaciers worldwide that aren't losing mass to climate change.
Perito Moreno is an Argentine icon, partly for its unusual accessibility via the lake, the largest within the nation. Visitors to Los Glaciares National Park can boat or kayak out on ice-blue water for a better look—but they need to keep a safe distance as icebergs constantly calve from the glacier's face, creating huge splashes and waves.