缪尔树林国家保护区的巨型红杉树林, 加利福尼亚州, 美国 Giant redwood trees in Muir Woods National Monument, California, USA (© photo by canderson/Getty Images)

时光在此处茁壮成长 Where time grows tall

缪尔树林国家保护区, 美国

走进巨人的国度吧。试着像拥抱一位温柔的巨人那样，把双臂环在红杉粗壮的树干上，触摸蕴藏着千年智慧的时间年轮。欢迎来到缪尔树林国家纪念地——它在1908年的今天正式诞生，坐落于旧金山北部，是一座由海岸红杉构成的壮丽殿堂。这里的红杉是地球上最高的树木，其中一棵高达约258英尺，相当于43个人从头到脚叠加的高度。这些树大多已经600到800岁，有的甚至跨越了千年。但对于一个最长能活到2000年的物种来说，它们依然算是“年轻的巨人”。在这片幽深的原始森林中，每一棵高耸入云的红杉都是时间的见证者，也是一位静默的守护者。

它们是如何屹立至今的？厚实且耐火的树皮与天然的单宁让红杉远离虫害与疾病；它们的根系虽只深入地下三四米，却能向四周延展近百英尺，与周围的同伴紧紧相扣，形成稳固的支撑。来自太平洋的雾气在干燥的夏季飘入森林，提供近四成的水分；倒下的巨木则化作“育苗木”，分解自身、滋养土地，为新生命铺下起点。当你步入这片森林，请向这些超越生命尺度的巨木轻轻致意。你的脚步声在时间的河流中荡起涟漪，顺着它缓缓向前，流向这些巨人耐心等待的未来。

Muir Woods National Monument anniversary

Step into the realm of giants. Try embracing a BFG (Big Friendly Giant) as you wrap your arms around a thousand years of wisdom in a single tree trunk. Welcome to Muir Woods National Monument—established on this day in 1908—a majestic hall of coastal redwoods just north of San Francisco. These towering redwoods are the tallest trees on Earth—one here stretches about 258 feet, roughly the height of 43 people stacked head to toe. Most are 600–800 years old, and some have stood for over a millennium, yet they're still considered 'young' for a species that can live for 2,000 years.

How do they endure? Thick, fire-resistant bark and tannins ward off insects and disease, while their roots—though only 10 to 13 feet deep—spread outward up to 100 feet and interlock with neighbors for stability. Fog drifting in from the Pacific provides nearly 40% of their water during dry summers, and fallen trees recycle nutrients as 'nurse logs,' fueling new life. As you enter this forest, bow to the trees that rise beyond life itself. Your footsteps ripple through the river of time, flowing toward the future these giants patiently await.

拱门国家公园的北窗框景中的炮塔拱门, 犹他州, 美国 Turret Arch framed by North Window in Arches National Park, Utah, USA (© Jim Patterson/TANDEM Stills + Motion)

古老岩石的传奇 OldRockArch

古岩石日

今天，让我们重新审视时间的尺度。古岩石日，揭开地球深藏的秘密：亿万年的风沙、海洋与火焰，塑造了我们脚下的世界。在犹他州拱门国家公园，透过北窗眺望炮塔拱门，仿佛凝视一段漫长的史诗。如今的拱门由恩特拉达砂岩构成，而那些砂岩曾是流动的沙丘和浅海，经过漫长侵蚀才雕刻出如今的拱形。可即便如此，这些地质构造仍算年轻。地壳在板块、侵蚀与火山的轮回中不断重生，唯有古老的大陆地盾守护着真正的远古。加拿大的阿卡斯塔片麻岩，约有40亿年历史，是目前已知最古老、仍扎根原处的岩石。

古岩石日不仅讲述岩石的故事，也铭记地质学先驱。泰奥弗拉斯托斯与老普林尼记录了早期矿物研究；1603年，阿尔德罗万迪让“地质学”成为一个学科的名字；150年后，威廉·史密斯绘出了首张地质地图；1785年，詹姆斯·赫顿掀开地球年龄的面纱，让我们第一次意识到脚下世界的浩瀚时光。

Old Rock Day

Today is a day that puts time into perspective. Old Rock Day highlights the vast geological processes that have shaped our world since its earliest eras. In Arches National Park, Utah, Turret Arch—seen through North Window—offers a striking reminder: landscapes can take hundreds of millions of years to assemble. The Entrada Sandstone that forms these arches began as shifting dunes and shallow seas long before erosion carved today's shapes. Even so, these formations are relatively young. Most rocks on Earth disappear over time because plate tectonics, erosion, and volcanism continually recycle the crust. Only the planet's ancient continental shields preserve truly old material. Canada's Acasta Gneiss, about 4 billion years old, is the oldest known rock still rooted where it formed.

Old Rock Day also remembers the pioneers of geology. Theophrastus and Pliny the Elder recorded early mineral studies, while Ulisse Aldrovandi helped establish the term 'geology' in 1603. One hundred fifty years later, William Smith drew the first geological map. And in 1785, James Hutton revealed the Earth's immense age, providing insights that continue to shape our understanding of the ground beneath our feet.

国王山, 楚加奇山脉, 阿拉斯加, 美国 Kings Mountain, Chugach Mountains, Alaska, USA (© Chris Moore - Exploring Light Photography/TANDEM Stills + Motion)

王者视野 A royal view

国王山, 楚加奇山脉, 阿拉斯加

在阿拉斯加楚加奇山脉，国王山不仅仅是远方的轮廓，它的雄浑之美足以让人停下脚步凝视。海拔逾5800英尺，坐落在帕尔默东北约22英里，俯瞰格伦公路第75英里段，这条公路因壮丽景观而闻名。山体的坡面刻满冰川遗痕，沟谷与山脊如同天然的冒险乐园。

德纳伊纳语中的名字 Bashtl'ech'，意为“黑石”，诉说着它的文化根源；而英文名则纪念了阿拉斯加淘金热时期的探矿者阿尔·金。如今，徒步者和攀登者为挑战而来：陡峭的坡道、瞬息万变的天气，以及如画的景致，都是历经艰辛后的奖赏。晴天时，远方的马塔努斯卡冰川闪烁光芒，野花点缀岩石，阿拉斯加的荒野在此刻展现出温柔一面。带上保暖衣物和笑容，天气瞬息万变，但若你足够幸运，站在国王山顶，仿佛与天空握手。

Kings Mountain, Chugach Mountains, Alaska

Kings Mountain in Alaska's Chugach Mountains isn't just another bump on the horizon—it's the kind of rugged beauty that makes you slow down and stare. Rising over 5,800 feet and sitting roughly 22 miles northeast of Palmer, this peak towers over mile 75 of the Glenn Highway, a route famous for its dramatic scenery. Its slopes bear the marks of ancient glaciers, etched into ridges and valleys that seem tailor-made for adventure.

The Dena'ina name, Bashtl'ech' (black stone), speaks to its cultural roots, while its English name honors Al King, a prospector from Alaska's gold rush days. Today, hikers and climbers come for the challenge: steep ascents, unpredictable weather, and views so sweeping they feel like a hard-earned reward. On clear days, the Matanuska Glacier glimmers in the distance, and wildflowers brighten the rocky terrain, reminding you that even Alaska's wilderness has a soft side. Pack layers and a sense of humor—the weather changes fast—but if you're lucky, standing atop Kings Mountain feels like shaking hands with the sky.

苏必利尔湖沿岸的冰层，大马雷，明尼苏达州，美国 Plate ice along Lake Superior, Grand Marais, Minnesota, USA (© wanderluster/Getty Images)

冬之碎片 Shards of winter

苏必利尔湖沿岸的冰层，大马雷，明尼苏达州

在明尼苏达的苏必利尔湖，冬季来临时，湖岸会出现一种名为“板冰”的奇特景象：薄冰在温度变化下破裂，随风漂移并堆叠，最终形成倾斜的冰片，如同玻璃碎片般闪耀。蓝色与银色交织的半透明冰面在阳光下折射出锐利的光影，使湖边看起来更像艺术雕塑，而非冰封。

水面之下，波浪持续运动，推动冰片互相碰撞，发出摩擦声、清响和低沉的声响。这些声音随水流起伏，仿佛一场瞬息万变的自然演出。这类冰层结构可能突然形成，也会迅速消失，随着风力和气温的变化不断改变形态。

苏必利尔湖的辽阔，孕育了这片冬日奇景。作为全球面积最大的淡水湖，约31,700平方英里，深邃的湖床、独特的风向模式与剧烈的温差变化，共同谱写这场冰雪乐章。当地原住民奥吉布瓦族赋予其"Gichigami"之名，恰如其分地印证了这片水域自古以来"大湖如海"的盛名。

Plate ice along Lake Superior, Grand Marais, Minnesota

When winter tightens its grip on Lake Superior in Minnesota, the shoreline transforms into a landscape of tilted, glass-like shards known as plate ice. Thin sheets fracture under shifting temperatures, then drift and stack as the wind presses them toward land. The result is a field of translucent blues and silvers, catching the light at sharp angles and making the water's edge appear sculpted rather than frozen.

Beneath the surface, waves keep moving, pushing the slabs against one another as they scrape, ring, and groan. The sounds rise and fall with the motion, turning the shoreline into a fleeting, shifting performance. These formations can appear suddenly and disappear just as quickly, changing with every gust and temperature dip.

Lake Superior's immense scale shapes this phenomenon. As the world's largest freshwater lake by surface area, spanning about 31,700 square miles, its depth, wind patterns, and temperature swings set the stage for this winter display. Its Ojibwe name, 'Gichigami,' from the Indigenous people of the region, reflects its long-standing reputation as a 'great sea.'

太阳神庙，圆顶礁国家公园, 犹他州, 美国 Temple of the Sun, Capitol Reef National Park, Utah, USA (© Austin Cronnelly/TANDEM Stills + Motion)

犹他州的时光层叠 Layers of time in Utah

庆祝圆顶礁国家公园成立54周年

数百万年的岩层沉积，伴随地壳的巨大弯曲，造就了这片沙漠独一无二的地质窗口。这里是犹他州的圆顶礁国家公园，砂岩峭壁与峡谷像一本打开的历史书，记录着地球的沧桑。1971年12月18日，它被正式列为国家公园。今日的图片聚焦大教堂谷的砂岩巨石，其中包括壮丽的“太阳神殿”，彰显这片景观的非凡魅力。

圆顶礁国家公园得名于两大标志性地貌特征：水袋褶皱中的圆润砂岩穹顶，宛如美国国会大厦；以及褶皱的脊线，曾像“礁石”般阻隔早期旅人穿越沙漠。1937年，这里先被列为国家纪念地，直到后来才晋升为国家公园。

这一天不仅纪念自然奇观，也铭记这里的人类历史。早在拓荒者果园出现之前，原住民就在弗里蒙特河畔繁衍生息，并在峡谷的岩壁上刻下岩画，留下古老的印记。

Celebrating 54 years of Capitol Reef National Park

Rock layers formed over millions of years and a massive bend in the Earth's crust give this desert a rare window into geologic history. This is Capitol Reef National Park in Utah, where sandstone cliffs and canyons preserve a striking record of the planet's past. December 18 marks the anniversary of its designation as a national park in 1971. Today's featured image highlights the sandstone monoliths of Cathedral Valley, including the Temple of the Sun, part of this extraordinary, protected landscape.

Capitol Reef takes its name from two defining features: rounded Navajo sandstone domes—within the Waterpocket Fold—that resemble the US Capitol building, and the Fold's ridges that form a 'reef,' which blocked early travel across the desert. Before becoming a national park, the area was designated as a national monument in 1937.

This anniversary also honors the human history linked to this region. Indigenous communities lived along the Fremont River long before pioneer orchards appeared, leaving petroglyphs carved into canyon walls.

默塞德河, 优胜美地国家公园, 加利福尼亚, 美国 Merced River, Yosemite National Park, California, USA (© Ron and Patty Thomas/Getty Images)

冰封的倒影 Frozen reflections

默塞德河, 优胜美地国家公园, 加利福尼亚

每一幅杰作都需要点睛之笔。而优胜美地的点睛之笔便是默塞德河。作为美国国家级“野生与风景河流”之一，这条水系起源于内华达山脉高处，汇集雪水，蜿蜒145英里，穿过优胜美地山谷，流入加州中央谷地。

这条河的西班牙语名"El Río de Nuestra Señora de la Merced"，意为"慈悲圣母河"，恰如其分地诠释了它的双重性：随季节更迭，时而宁静如镜，时而奔腾如潮。春季，融雪使河水暴涨，激流在石桥下奔涌，冲过如春瀑、内华达瀑等轰鸣的瀑布群，成为优胜美地的主角。夏季河水转为平缓，吸引着漂流者和游泳者。秋日落叶随水漂流，为河面添上点点金黄；冬日万物归寂，河面如镜般澄澈。有趣的是，这条河滋养着麦克卢尔湖——每逢秋冬季水位下降，湖底便会浮现一座鬼城。河流下游曾矗立着默塞德瀑布，这座淘金热时期繁华的磨坊小镇，如今已归于沉寂。

Merced River, Yosemite National Park, California

Every masterpiece needs a brushstroke to tie it together. For Yosemite National Park, that stroke is the Merced River—painting reflections of granite cliffs, pine forests, and waterfalls across its canvas. One of the National Wild and Scenic Rivers, this waterway begins high in the Sierra Nevada. It gathers meltwater and winds 145 miles west through Yosemite Valley into California's Central Valley.

Its Spanish name, 'El Río de Nuestra Señora de la Merced,' translates to 'River of Our Lady of Mercy,' and suits it well: it offers both calm and chaos depending on the season. Spring turns the river into Yosemite's main act, as snowmelt sends torrents rushing beneath stone bridges and past roaring waterfalls like Vernal and Nevada Falls. Summer brings a gentler flow that attracts rafters and swimmers. Fall adds a hint of gold as leaves drift downstream, and winter slows everything to a reflective stillness. Interestingly, it feeds Lake McClure, where a ghost town rises when water levels drop in fall and winter. Along its lower stretches once stood Merced Falls, a bustling mill town during the Gold Rush era, now lying quiet.

大沼泽地国家公园的蜘蛛网，佛罗里达州，美国 Spider webs in Everglades National Park, Florida, USA (© Troy Harrison/Getty Images)

佛罗里达州的生命湿地 Florida's living wetlands

庆祝大沼泽地国家公园成立78周年

在美国的最南端，延展着一片与众不同的自然奇景：大沼泽地。它既不是典型的沼泽，也不是河流，而是一片缓慢流动、浅而宽广的水域，从平坦的草原向南漂移，最终注入佛罗里达湾，它将森林、湿地、红树林与沿海草原连成一个庞大而复杂的亚热带生态网络。栖息着包括短吻鳄、海牛及濒危的佛罗里达美洲狮在内的数百种生物。1947年12月6日，美国设立了大沼泽地国家公园，保护面积超过150万英亩，并首次将保护重点从单一地标转向整体生态系统的保育。

如今日图片所示，蜘蛛网在芦苇间轻盈铺展，细丝在阳光下折射出细碎的光影。如今，大沼泽地已被列入联合国教科文组织世界遗产名录，然而它的生态平衡依旧脆弱：污染、城市开发以及水流改造，持续威胁着这片土地的生机。包括《大沼泽地综合修复计划》在内的重大生态项目，正致力于恢复自然水流、减少污染并限制城市扩张。在这片由湿地与水道交织的生态拼图中，生活着超过 350 种鸟类；美洲鳄与短吻鳄共栖同一片水域；佛罗里达美洲狮则在寂静的走廊间穿行。大沼泽地是一片仍在呼吸的土地。它提醒我们，保护自然，并非让生命静止，而是让它继续流动。

Celebrating 78 years of Everglades National Park

On Florida's southern tip lies one of the United States' most unusual landscapes. The Everglades is not a typical swamp or river. It is a slow, shallow sheet of water that drifts south across flat grasslands toward Florida Bay, linking forests, marshes, mangroves, and coastal prairies. This subtropical wilderness supports hundreds of species, including alligators, manatees, and the endangered Florida panther. On December 6, 1947, the United States established the Everglades National Park, protecting over 1.5 million acres and shifting conservation toward preserving entire ecosystems rather than isolated landmarks.

Spider webs stretch between reeds, catching light in fine reflections in the image featured today. The park is now a UNESCO World Heritage Site, yet its balance remains fragile: pollution, development, and altered water flow still threaten its habitats. Major restoration efforts, including the Comprehensive Everglades Restoration Plan, aim to restore natural water patterns, reduce pollution, and limit urban expansion. Within this mosaic, over 350 bird species live, both American crocodiles and alligators share its waters, and panthers move through its quiet corridors. The Everglades endures as a working landscape, proof that protection means letting life keep moving.

日出时的沙丘鹤, ‌阿帕奇森林国家野生动物保护区, 新墨西哥州, 美国 Sandhill cranes at sunrise, Bosque del Apache National Wildlife Refuge, New Mexico, USA (© Jack Dykinga/Minden Pictures)

曙光中的鹤影 Dawn of the cranes

沙丘鹤, ‌阿帕奇森林国家野生动物保护区, 新墨西哥州

每年十二月，晨光初露，响亮的鹤鸣声在阿帕奇森林国家野生动物保护区的沼泽间回荡。这片占地5.7万英亩的新墨西哥中部圣地，即将上演一场震撼心灵的自然盛景——沙丘鹤结束季节性迁徙，重返故地。不久，成千上万只雪雁和其他候鸟也将加入，振翅高飞，天空被生命的律动与鸣声填满。

沙丘鹤延续千年的迁徙，是一场跨越大陆的史诗，每年冬季，它们从北方平原飞向南方栖息地，这场壮观景象背后，是关于生命韧性的传奇。沙丘鹤是现存最古老的鸟类之一，其血脉可追溯至250万年前，历经冰川时代与无数气候变迁，仍顽强延续。它们曾一度濒临灭绝，却在数十年的努力保护下重获生机。如今，成千上万只沙丘鹤在新墨西哥的湿地找到庇护，这也昭示着一个真理：生命，只要被守护，终会找到回家的路。

Sandhill cranes, Bosque del Apache National Wildlife Refuge, New Mexico

Every December, as morning unfolds, a chorus of rattling calls fills the marshes of the Bosque del Apache National Wildlife Refuge. This 57,000-acre sanctuary in central New Mexico prepares to stage one of nature's most stirring performances as sandhill cranes return from their seasonal journey. Soon, tens of thousands of snow geese and other migratory birds join the scene, filling the sky with movement and sound.

We're in the midst of a migration that has carried sandhill cranes across continents for millennia. Each winter, they travel south from their breeding grounds in the northern plains. Beyond the spectacle lies a story of resilience. The sandhill crane is among the oldest living bird species. It descends from a lineage that stretches back over 2.5 million years, enduring ice ages and countless climate shifts. Once nearly extinct, they have rebounded thanks to decades of conservation. Today, thousands find refuge in this New Mexico wetland—a reminder that when life is nurtured and given space, it always finds its way home.

柳树湖与布莱克本山, 兰格尔－圣伊利亚斯国家公园暨保护区, 阿拉斯加州, 美国 Willow Lake and Mount Blackburn, Wrangell-St. Elias National Park and Preserve, Alaska, USA (© Patrick J. Endres/Getty Images)

一景胜千言 A view that speaks volumes

圣伊利亚斯国家公园周年纪念

1980年12月2日，美国通过《阿拉斯加国家利益土地保护法》，为自然保护史写下浓重一笔。这项具有划时代意义的法律使阿拉斯加逾1.04亿英亩的荒野获得永久保护，图中所示的兰格尔-圣埃利亚斯国家公园暨保护区因此成为美国最大的国家公园。该法不仅守护壮丽的生态，也延续原住民的传统，真正实现自然与人文的和谐共生。

兰格尔－圣伊利亚斯，是极致之境：冰川如凝固的河流绵延，火山峰刺破苍穹。其间，海拔16,390英尺的布莱克本山巍然屹立，冰雪覆盖的山坡孕育庞大的冰川系统，宛如地质岁月的无声丰碑。公园边界之外，铜河盆地的柳湖静卧在理查森公路旁，宛若路途上的一颗明珠。晴日里，湖面如镜，映照着无尽的山景：布莱克本洁白的峰肩托起湛蓝的天空，倒影中天鹅悠然漂游，仿佛活生生的画笔。这样的景象，无需言语，便诉说着《阿拉斯加国家利益土地保护法》的故事——一部将风景化为永恒的法律。

Alaska National Interest Lands Conservation Act anniversary

On December 2, 1980, the Alaska National Interest Lands Conservation Act (ANILCA) reshaped America's conservation history. With one sweeping law, more than 104 million acres of Alaska's wild lands gained lasting protection, like the Wrangell–St. Elias National Park and Preserve, seen here, now the largest national park in the United States. ANILCA balanced preservation with tradition, safeguarding ecosystems while honoring rural subsistence rights.

Wrangell–St. Elias is a realm of extremes: its glaciers sprawling like frozen rivers, volcanic peaks piercing the sky. Among them stands Mount Blackburn, a 16,390-foot sentinel of ice and ancient fire. Its snow-mantled slopes feed vast glacier systems, a silent monument to geological time. Just beyond the park boundary, Willow Lake rests in the Copper River Basin—a roadside jewel along the Richardson Highway. On clear days, its glassy surface reflects the Wrangell Mountains in a panorama that feels endless: Blackburn's white shoulders rising against cobalt skies, mirrored in still waters where swans drift like living brushstrokes. This view tells ANILCA's story without words—a law that turned landscapes into legacies.

谢南多厄国家公园的秋色，弗吉尼亚州，美国 Fall colors in Shenandoah National Park, Virginia, USA (© Michael Ver Sprill/Getty Images)

小径在召唤 The trails' call

谢南多厄国家公园，弗吉尼亚州，美国

谢南多厄国家公园，弗吉尼亚州的山间瑰宝。蓝岭山脉在此披上最华美的盛装：金黄的山核桃树、绯红的枫树，以及镀上青铜色的橡树。十一月的空气愈发清冽，秋日的余晖低声细语，悄悄停留在山坡上。沿着天际线公路缓缓前行，105英里的蜿蜒公路带你俯瞰云海翻涌，云影在山谷间轻轻流动，像思绪在天空漂移。这里还有超过500 英里的步道，沿着小径，你会走进瀑布奔流的深谷，登上触碰天际的高峰。石人峰、鹰嘴峰、暗谷瀑布——每处皆是石与叶谱写的诗篇，静待游人的脚步与风声共鸣。

National Take a Hike Day

National Take a Hike Day is more than a date—it's an invitation to step away from screens and into the rhythm of nature. Created by the American Hiking Society, this day celebrates the simple act of walking under open skies and reminds us that health and happiness often begin with a single stride. Across 60,000 miles of US trails, hikers rediscover the quiet magic of forests, the strength in their own breath, and the promise of unspoiled landscapes.

And then there's Shenandoah National Park, Virginia's mountain jewel. Here, the Blue Ridge Mountains wear their finest colors—golden hickories, crimson maples, and oaks brushed in bronze. By November, the air turns crisp, and the last embers of fall cling to the hillsides like whispered secrets. Skyline Drive winds for 105 miles, offering vistas where clouds drift like thoughts across endless valleys. Trails—more than 500 miles of them—lead to places where waterfalls tumble and summits greet the horizon. Stony Man, Hawksbill, Dark Hollow Falls—each a poem written in stone and leaf, waiting for footsteps to rhyme with the wind.