方解石温泉区和黄石河，黄石国家公园，怀俄明州，美国 Calcite Springs Overlook and Yellowstone River, Yellowstone National Park, Wyoming (© Rebecca L. Latson/Getty Images)

方解石温泉区和黄石河，黄石国家公园，怀俄明州，美国 Calcite Springs Overlook and Yellowstone River, Yellowstone National Park, Wyoming (© Rebecca L. Latson/Getty Images)

从火山之源到河流之路 From volcanic roots to river routes

方解石温泉区和黄石河，美国

黄石河是美国本土48州最后一条未建坝的主要河流，它从黄石公园东南方向发源，全长671英里（1080公里），汇入密苏里河，最终汇入大西洋。这座地热与峡谷交汇的观景台，让您近距离欣赏黄石河蜿蜒流经熔岩锻造的峡谷的壮丽景色。沿着玄武岩峭壁，可以看到富含矿物质的地下水仍在冒着热气，形成了白色的矿藏，方解石泉也因此得名。您或许还能看到白头鹰在头顶滑翔，或是野牛在附近悠闲地休息。黄石公园不仅仅是一个公园，它更是一座拥有游客中心的超级火山。

Yellowstone for the National Park Service's birthday

Today, the National Park Service celebrates another trip around the sun—and nearly 85 million acres of American beauty under its care. From geysers that spout like soda cans to ancient cliff dwellings tucked into canyon walls, the NPS has spent over a century preserving, protecting, and inviting people to take a hike—literally. In 1916, President Woodrow Wilson signed the Organic Act into law, officially creating the NPS to 'conserve the scenery and the natural and historic objects.' Since then, the NPS has grown to oversee more than 400 sites, including national parks, battlefields, monuments, and seashores.

What better spot to toast the occasion than the Calcite Springs Overlook in Yellowstone National Park, Wyoming? This thermal-meets-canyon overlook offers front-row views of the Yellowstone River carving its way through a lava-forged canyon. Along the basalt cliffs, white mineral deposits that gave Calcite Springs its name are visible, formed by mineral-rich waters still steaming from underground. You might spot a bald eagle gliding overhead or bison lounging nearby. Yellowstone is more than just a park—it's a supervolcano with a visitor center.